Before the EKG: Making the Electricity in Nerves and Muscles Audible — 1919

Man wired to a device of vacuum tubes, transformer and speaker, 1919.  This was an experiment by Rudolf Höber to make audible variations electricity in human cells. Physiological Institute, University of Kiel, Germany.

Man wired to a device of vacuum tubes, transformer and speaker, 1927. This followed up on an experiment by Rudolf Höber in 1919 to make audible variations in electrical current in human cells. Physiological Institute, University of Kiel, Germany.

I love this picture.  A balding man in a brown work coat lies on a wooden garden lounge chair incongruously brought into the paneled rooms of the Physiological Institute at the University of Kiel, Germany in 1927.  The experimental subject is wired to an electrical apparatus on a table that is in turn wired to a morning-glory-shaped loudspeaker horn.  We are standing with a group of medical students waiting intently for the sound of the subject’s heart muscles and nerves to emerge from the horn (and perhaps hoping that the 100-volt battery that powers the apparatus doesn’t do him any harm).  The device emitted rhythmic notes of varying tones and intensity as the electrical impulses in the muscles and nerves varied with the heartbeat.  Sometimes called the “electric stethoscope,” this instrument was adapted as a teaching tool to train doctors to diagnose the condition of the heart through sound.

Rudolf Höber, Professor of Physiology, University of Kiel.  He was actually a more cheerful and charming person than this rather serious picture shows him to be.

Rudolf Höber, Professor of Physiology, University of Kiel.

One of the first persons to use the amplified sound of the heart to teach use of the stethoscope was my grandfather, Rudolf Höber (1873-1953).  He was a pioneering physiologist at the Universities of Zürich, Kiel and Pennsylvania who has been remembered for discoveries in biochemistry and biophysics at the cellular level. A couple of years ago, The Journal of Electrical Bioimpedence noted the 100th anniversary of Rudolf’s discoveries related to the variability of electrical charges across cell membranes.  Among other things, Rudolf was an inventor who devised instruments for measuring electrical characteristics at the cellular level; he even had a glass blower working for him to fabricate apparatus.  Here is his diagram of a bioelectric device he created around 1910:

Ronald Pethig's labeling of Rudolf's  diagram for his device.

Ronald Pethig’s labeling of Rudolf’s diagram for his bioelectric measurement device, 2012.

During World War I, the technology of vacuum tubes was developed that enabled the amplification of electrical waves for use in telephones.  Rudolf adapted this technology to use in combination with his earlier bioelectric measurement devices — resulting in the mechanism at the top of this page.

Vacuum Tubes

Early vacuum tubes similar to those used by Rudolf Höber to amplify the electrical impulses generated in nerve and muscle cells.

This year the University of Kiel is marking its 350th anniversary with a series of events, including the medical school’s exhibition on prominent scientists who worked there.  You can get information about the overall exhibition by clicking here and about Rudolf in particular here.

The street adjacent to the Physiological Institute at the University of Kiel is named for my grandfather. Photograph by my friend Nancy Greenspan.

The street adjacent to the Physiological Institute at the University of Kiel is named for my grandfather. Photograph by my friend Nancy Greenspan.


A Fastidious European Becomes an American Do-It-Yourselfer — 1939

The working mechanism inside an American toilet tank, ca. 1939.

The working mechanism inside an American toilet tank, ca. 1939.

When my father got to America at the age of 35, he had never so much as held a hammer in his hand.  In Germany, educated people like him hired someone to do household repairs.  In Philadelphia, Johannes shared a big old rented house with relatives and money was very tight, so it was a disaster when the toilet in the house developed a leak. Johannes asked one of his new American friends to recommend a plumber who could do the repair cheaply.  The friend told him not to call a plumber.  “Go to the hardware store first,” the friend said, “and see if they can help you.”

Ten members of the Hoeber family shared this house in 1939 before most of them had jobs in the new country. The house at 6701 Cresheim Road is in better condition today than it was then.

Ten members of the Hoeber family shared this house in 1939 before most of them had jobs in the new country. The house at 6701 Cresheim Road is in better condition today than it was then.

Bellet’s hardware store, around the corner on Germantown Avenue, was packed with tools and screws and nails and parts and housewares in great array.  Johannes asked Mr. Bellet if he could possibly help him with a leaky toilet.  Mr. Bellet walked him to a counter where there was a toilet with the tank partially cut away to show the flush valves and float mechanism and other innards that made the thing work.  Mr. Bellet asked Johannes to show him where the water was leaking, and Johannes pointed to the connection between two brass and copper parts.  “Here’s how you fix it,” said Mr. Bellet, and started unscrewing nuts and disassembling the parts of the mechanism.  After a few moves, Mr. Bellet was able to pull out a small black rubber washer from a connecting joint.  Holding it up triumphantly, he said cheerfully, “Here’s what you need!” Out of the chaos of a cabinet with dozens of small wooden drawers Mr. Bellet pulled a matching washer and handed it to Johannes.  “Do you now know how to put it back together?” he asked.   When Johannes responded with a dubious grimace, Mr. Bellet led him back to the mysterious toilet mechanism on the counter. Deftly but deliberately, Mr. Bellet re-installed the little black washer and patiently instructed Johannes at each step of the way.  “Understand now?” asked Mr. Bellet.  “I think so,” said Johannes.  “How much do I owe you?”  “Five cents,” said Mr. Bellet, beaming.  Johannes was not the first immigrant he had taught to repair a toilet.

Bellet's Hardware closed years ago, but it probably looked a lot like Bruskin's, an ancient hardware store still operating today in South Philadelphia.

Bellet’s Hardware closed years ago, but it probably looked a lot like Bruskin’s, an ancient hardware store still operating in South Philadelphia.

Johannes nearly ran back to the house on Cresheim Road to try out his newly-learned skills and his newly-bought washer on the recalcitrant toilet.  Remembering Mr. Bellet’s instructions pretty accurately, he carefully dismantled the mechanism, located the worn, slimy old washer, replaced it with the sturdy new one and put the thing back together.  He turned the water back on — no leak!  He flushed — it worked!

That evening, with the rest of his relatives gathered around the dinner table, Johannes regaled them with his adventure with Mr. Bellet and the black washer.  “This is a wonderful country,” he said. “Five cents for a washer and five dollars worth of free advice!”  And he later taught his kids that in America you don’t call the plumber, you do it yourself.

Johannes U. Hoeber, when he wasn't repairing a toilet.

Johannes U. Hoeber, when he wasn’t repairing a toilet, 1939.


A Family Lost — and Found, 1934-2015

Prof. Isidor Rosenthal 1837-1915.  He was married to my great-great gandmother's sister and taught physiology at the University of Erlangen.

Prof. Isidor Rosenthal 1837-1915. He was married to my great gandmother’s sister and taught physiology at the University of Erlangen.

My great grandmother’s sister, Anna Höber, married Isidor Rosenthal in 1869.  He was a professor of physiology at the University of Erlangen and became the mentor to my grandfather, Rudolf Höber, who also became a professor of physiology in Kiel and Philadelphia.  Anna Höber Rosenthal’s groundbreaking social reform work in maternal and child care and public health resulted in a street being named for her in Erlangen.  In 1870, Isidor and Anna had a son, Werner Rosenthal, who grew up to become a professor of pathology at the University of Göttingen, as well as an activist for education reform.  In 1915, Werner married Erika Deussen, daughter of the great Sanskritist and Indologist Paul Deussen. They eventually had three daughters, Ruth, Eva and Beate.

Werner Rosenthal and Erika Deussen Rosenthal, with their daughter Ruth, 1917. This was during World War I and Werner is wearing the uniform of an Army doctor.

Werner Rosenthal and Erika Deussen Rosenthal, with their daughter Ruth, 1917. This was during World War I and Werner is wearing the uniform of a German Army doctor.

Despite the fact that Werner was a practicing Protestant all his life, the Nazis removed him from his university teaching duties in 1934 because his father was born Jewish.  Erika, a government physician, also lost her job.  With no means of earning a living in Germany, Werner and Erika emigrated to India with their eldest daughter (the other two followed later).  Erika had connections in India because her father had studied Sanskrit and Indian religion there.  Werner became a professor at the University of Mysore and Erika practiced medicine. When World War II began in 1939, the British colonial government incarcerated Werner as an “enemy alien” and he died in a prison camp in 1942.

In the 1950s, Erika and two of her daughters, Eva and Beate, moved to the United States.  I met them when I was a boy.  The third sister, Ruth, had moved from India to Israel in 1938 or 1939, shortly before the War.  There she met and married Hubert Sommer, a Jewish refugee from Austria.

Although my parents kept in contact with Eva and Beate for many years, and although I exchanged letters with Beate until shortly before her death in 2004, I knew nothing of Ruth, other than that she lived in Israel.  Then, in November 2014, I was conducting some Internet research and stumbled across a genealogical website with tons of information about her and her descendants.  I discovered that Ruth had three children, nine grandchildren and a dozen great-grandchildren.

All at once I had 30 new Israeli cousins I had never heard of! I began an email exchange with several of the family and even got a phone call from one of these distant relatives.  I was delighted to be able to provide them with references to biographies of Isidor Rosenthal and Paul Deussen and a book that detailed Werner Rosenthal’s work in support of adult education.

Books on Isidor Rosenthal, Werner Rosenthal and Paul Deussen.

Books on Isidor Rosenthal, Werner Rosenthal and Paul Deussen. (Click for legible image.)

This spring, my cousin Yoel Sommer, Ruth’s son, along with his wife Gina and his son Ishay, traveled from Israel to Germany to visit the sites that had been home to their family generations ago.  I was able to connect them with writers and academics who have studied and written about the family members who preceded them. My academic friends were able to tell Yoel and his family pieces of their family’s history they previously did not know.  The Sommers were able to visit the well-preserved grave of Isidor Rosenthal in Erlangen, the grave and little museum dedicated to Paul Deussen in Oberdreis, and the house in Göttingen where Werner and Erika once lived.  As it happened, their visit coincided with the centennial of the death of Isidor Rosenthal.  Without being there myself, I was moved by the reuniting of this family with the places from which their ancestors originated — reunited over space and time, and through tragedy and history.

Gina, Ishay and Yoel Sommer at the monument and grave of Isidor Rosenthal in the Zentralfriedhof in Erlangen.  They are accompanied by Professors Karl-Heinz Leven and Karl-Heinz Plattig of teh University of Erlangen.

Gina, Ishay and Yoel Sommer at the monument and grave of Isidor Rosenthal, Yoel’s great-grandfather, April 10, 2015.  The monument is in the Zentralfriedhof in Erlangen, where Isidor died a hundred years ago. They are accompanied by Professors Karl-Heinz Leven and Karl-Heinz Plattig of the University of Erlangen. (Click for larger image.)

Grave of Paul Deussen in Oberdreis visited by the Sommers, April 9, 2015, accompanied by Deussen's biographer, Heiner Feldhoff.  Prof. Deussen was Yoel's great-grandfather.

Grave of Paul Deussen in Oberdreis visited by the Sommers, April 9, 2015, accompanied by Deussen’s biographer, Heiner Feldhoff. Prof. Deussen was Yoel Sommer’s great-grandfather.


An Inventory of a Life Together — A Requirement to Leave Nazi Germany, 1939

As I  await the publication of Against Time:  Letters from Nazi Germany, 1938-1939, the story of my parents’ emigration to the United States, I am trying to give readers here an idea of what was involved in those tense times.  There were difficulties from both sides:  the Germans made it hard to get out and the United States made it hard to get in.

German policy for all practical purposes allowed taking only 10 % of cash, stocks or valuables out of Germany.  Two departure taxes, the Gold Discount Bank Fee [Golddiskontobankabgabe] and the Nation Abandonment Tax [Reichfluchtsteuer] amounted, in effect, to the expropriation of  up to 90% of the liquid assets of emigrants.  Jewelry, silver, artworks and similar valuables were subject to the same taxes to prevent people from turning their money into objects they could  export.

Inventory of the household effects of Johannes and Elfriede Höber required by the Nazis as a condition of leaving the country.  August 9, 1939.

Inventory of the household effects of Johannes and Elfriede Höber required by the Nazis as a condition of leaving the country. August 9, 1939.

What was permitted was the export of household belongings and personal effects sufficient for a “modest life” [bescheidende Existenz] in the émigré’s new country.  Anyone planning to move out of Germany had to file a detailed inventory of everything they owned before they could get a permit to leave.  The normal method of shipping was by having a moving company pack the entire household into an enormous crate that would then be transferred by crane to a ship and transported by sea.  When the crate reached the United States, the household goods would be transferred to a truck and delivered to the new residence.

My father came to the United States in December 1938 but my mother and my then nine-year-old sister were not able to leave Germany until late the following year.  In August 1939, my mother prepared the household for shipping, and prepared the required inventory, a copy of which she later brought with her to America.

The inventory was insanely detailed, down to “one wash line and clothes pins,” a trash can, a honey jar, a cookie box, six dust cloths, and a box of cloth remnants for patching holes in worn clothing.  My parents were both then age 35 and had been married for ten years. The inventory illuminates the lifestyle of a middle-class European family of the 1930s. Thus, the inventory includes furniture, beds and bed linens, china and silverware, kitchen utensils and other items of daily life, but also a dozen each of wine glasses, champagne glasses, beer glasses, punch glasses and liqueur glasses.  My parents’ leisure activity is shown in the listing of two pairs of skis and two pairs of ski boots as well as two pairs of hobnailed climbing shoes, a rucksack and a pair of mountaineering pants — and a picnic basket and its contents.  Most revealing to me was the inclusion on the list of 800 books — mostly on economics, art history and fine arts — as well as 100 children’s books, a pretty good personal library for a nine year old.

My sister, Susanne Höber, as a little girl in the Alps. The inventory of our family’s belongings showed they were people who enjoyed the mountains and also that our parents gave her lots of books.

You can read the full 5-page inventory here: Inventory August 9 1939 — English translation . One of many ironies of my parents’ life is that none of these carefully cataloged belongings ever got out of Germany.  My mother was still in Düsseldorf when Hitler started World War II by invading Poland on September 1, 1939.  As a result, no ships were available to transport the crate of household belongings to the United States.  With no other choice available, my mother had everything put in storage and fled.  Everything, from furniture to books to dust cloths, was destroyed during the Allied bombing of Düsseldorf on June 12, 1943.


Centenary of a Distinction for a Charming Man — Rudolf Höber, February 11, 1915

Rudolf Höber  (right)entertaining students of the medical school on a pleasant summer day near the University of Kiel, 1927.

Rudolf Höber (right) entertaining medical students at lunch on a pleasant summer day, University of Kiel, 1927.

By all accounts, my grandfather, Rudolf Höber, was a man with a sweet disposition.  He had lived through tragedy in his own life, including the suicide of his father and the death of his brother in a mountaineering accident. Rudolf’s best friend, Albrecht Bethe, believed these experiences endowed him with a deep sympathy for the troubles of others.   Although he was a brilliant scientist who explored the biochemistry of cells, he retained a sensitive appreciation for the beauty of the natural world as a whole. At a time when German professors held enormous social status and were known for their imperiousness, Rudolf  was valued by his students and colleagues for his accessibility and camaraderie.

Among other things, Rudolf was a committed feminist.  In an era when educational opportunities for women in science and the professions were limited, Rudolf mentored his new wife, Josephine, through medical school and into her practice as a  physician.  In addition, during his eleven years as an instructor [Privatdozent] at the University of Zürich (1898-1909) he supervised the dissertations of 24 medical students, two-thirds of whom were women.

Rudolf was named Associate Professor of physiology in the medical school at the University of Kiel in 1909  Then, exactly 100 years ago, Rudolf was appointed to the position of full professor and Director of the Physiological Institute.  The title of Professor was then so exalted in Germany that it could only be bestowed by the Emperor himself.  And so it was that Kaiser Wilhelm signed Rudolf’s appointment certificate on February 11, 1915.

Rudolf Höber's professorial appointment signed by Kaiser Wilhelm, February 11, 1915.

Rudolf Höber’s professorial appointment signed by Kaiser Wilhelm, February 11, 1915.

By 1930, Rudolf had become internationally known for his scientific work and for the work of the Physiological Institute he led.  In recognition, the University faculty elected him to the position of Rektor, or Chancellor, of the University.  Still, he retained his charm and good nature.  In May, Professor Hugo Prinz sent Rudolf a memo requesting that the Rektor issue an order directing that students were not permitted to congregate on the steps of the classroom buildings during the interval between classes.  Rudolf responded the next day:

Dear Colleague:

Your request that a notice be posted directing students that they are forbidden to stand on the steps during the interval between classes has been placed before me today.  I should like to recommend to you kindly that you not insist upon this.  It is surely not practical to ensure compliance with the prohibition.  Furthermore, the steps are so particularly alluring as a place to linger in the sunshine that your proposal strikes me as rather cruel.  I hope that your discomfort will not be too great, and that you will understand that I cannot put the requested directive into effect.

With best wishes,

Respectfully,

Höber

Letter from Rudolf Höber  to Professor Prinz declining to restrict students from congregating outdoors.  I am indebted to Dagmar Bickelmann of the Landesarchiv (State Archives) of the state of Schleswig-Holstein for unearthing this letter.

Letter from Rudolf Höber to Professor Prinz declining to restrict students from congregating outdoors. I am indebted to Dagmar Bickelmann of the Landesarchiv (State Archives) of the state of Schleswig-Holstein for unearthing this letter for me.

In 1933, Rudolf emigrated to Philadelphia, where he received an appointment at the University of Pennsylvania.  He continued to be popular among his students and continued to mentor women students in particular until his retirement in 1947.

Rudolf Höber late in his career (in the U.S.) with his research associate, Dr. Priscilla Briscoe, May 1939


Throwing a Pistol in the Rhine — 1933

Arminius "Pirkert" .32 caliber revolver, Germany, 1920s.  This might have been the kind of gun my father might have bought before the Nazis took over Germany in 1933.

Speculation: this Arminius “Pirkert” .32 caliber revolver, Germany, 1920s, might have been the kind of gun my father bought before the Nazis took over Germany in 1933.

When the Nazis took control of the city of Mannheim in March 1933, they arrested the top Social Democratic leaders in the city government, including my father, Johannes Höber.   They kept him in what they called “protective custody” for five weeks, as previously narrated on this website here.  In the months before the takeover, Johannes had been involved in the militia arm of the pro-democracy coalition Reichsbanner Schwarz-Rot-Gold.  I previously wrote about that anti-Nazi paramilitary force here.  As part of his involvement in the activities of the Reichsbanner, Johannes bought a pistol that he took on forays with other Social Democrats to disrupt Nazi meetings.  My father was a little guy and descended from a well-to-do family of serious intellectuals and scientists.  He never seemed to me the kind of man who would engage in this kind of reckless activity, but my mother’s head-shaking bewilderment when she told me about it made it clear the story was true.

Johannes Höber  with his daughter, Susanne, around the time he bought his pistol.  To me he doesn't look much like a candidate for an armed anti-Nazi militia.

Johannes Höber with his daughter, Susanne, around the time he bought his pistol. In this picture he doesn’t look much like a candidate for an armed anti-Nazi militia.

My mother, Elfriede Höber, was a committed pacifist and disapproved of my father’s heroics with the Reichsbanner and especially disliked his keeping a gun in the house.  Even decades later, in America, there was a notable tension between them on the one or two occasions when the story came up.

Elfriede Höber around the Nazis arrested  Johannes.

Elfriede Höber around the time the Nazis arrested Johannes.

When Johannes was jailed by the Nazis, Elfriede was left at home alone with their little girl, Susanne, then 3.  The pistol was hidden in a stack of bed sheets in the linen closet of their apartment.  In the early days of the new regime, no one knew what to expect of the Nazis, but Elfriede feared they might come and search the house for contraband after Johannes’ arrest.  Terrified that the Nazis would consider the gun proof that Johannes was an enemy of  the regime, Elfriede decided  she must get rid of it. But how?  The solution that came to her was the bridge across the Rhine River, which had been rebuilt and dedicated in a ceremony just a few months earlier.

The bridge over teh Rhine at Mannheim around 1934.  Elfriede probably used the walkway at the far right to carry Johannes' pistol onto the bridge.

The bridge over the Rhine at Mannheim around 1934. Elfriede probably used the walkway at the far right to carry Johannes’ pistol onto the bridge.

To support her, Elfriede asked her best friend, Marianne Daniels, to go with her to get rid of Johannes’ gun.  The two young women retrieved the pistol from its hiding place in the linen closet and placed it in a plain paper bag.  At night, the two walked out into the dark city, anxious that they might be stopped by a roving squad of storm troopers.  After walking for half an hour along the bank of the Rhine, however, they reached the dark bridge unmolested.  Hearts pounding, they walked out to the middle of the span and dropped the bag with the gun over the railing.  It disappeared into the black waters of the Rhine.  For the moment, that peril was out of the picture.

Postscript:  Readers of this blog may remember that my dear friend Achim in Dresden has shown astonishing skill in recovering rare items related to my family’s history.  This year Achim found an extremely rare copy of the program  from the ceremony on November 19, 1932 dedicating the newly reconstructed bridge at Mannheim, where Elfriede later got rid of the pistol.  The program book was produced by the Press Office of the City of Mannheim, which Johannes headed at the time.

Program for the dedication of the ne bridge across the Rhine at Mannheim, November 19, 1932.

Program for the dedication of the new bridge across the Rhine at Mannheim, November 19, 1932.


A Gift Over Four Generations

Set of fish knives and forks given to Rudolf and Josephine Marx Höber at the time of their wedding, Berlin,  August 10, 1901.

Set of fish knives and forks given to Josephine Marx and Rudolf Höber at the time of their wedding, Berlin, August 10, 1901.

Special sets of knives and forks for eating fish became popular in Europe in the late 19th century.  The steel blades used at that time in ordinary silverware would react with  fish in a way that imparted an unpleasant metallic taste.  Fish sets had silver-plated brass blades and tines that did not interfere with the delicate taste of fish.  The set pictured here was given to my grandparents, Rudolf and Josephine Marx Höber, as a wedding present at the time of their marriage on August 10, 1901.

Josephine Marx on the day of her wedding to Rudolf Höber, August 10, 1901 at her mother's apartment in Berlin.

Josephine Marx on the day of her wedding to Rudolf Höber, August 10, 1901, at her mother’s apartment in Berlin.

Rudolf and Josephine Höber with their first child, Johannes, around December 1904.

Rudolf and Josephine Höber with their first child, Johannes, around December 1904.

 Rudolf and Jospehine were fortunate in being able to bring the fish set with them when they were driven out of Nazi Germany and fled to America in 1934.

Fischbesteck 2

After Rudolf and Josephine died, the fish set was passed on to my parents, Johannes and Elfriede Hoeber.

Johannes and Elfriede Höber at the time of their marriage, December 22, 1928

Elfriede Fischer and Johannes U. Höber at the time of their marriage, Düsseldorf, December 22, 1928.

 After my parents’ deaths, the fish set came to me and my wife, Ditta.

F and D wedding

Ditta Baron and Francis W. Hoeber at their wedding, Philadelphia, July 1, 1967.

On New Year’s Eve, December 31, 2014, our younger son Julian married Heather Rasmussen, at the Maritime Hotel in New York City.  We decided that this was the time to pass the fish set on to a fourth generation.  We made a new silvercloth wrapper for the forks and knives and a new box.

Fischbesteck 4

Fischbesteck 1

The  silver set, newly polished after a century of use, is now with Julian and Heather in Los Angeles.

Julian Hoeber and Heather Rasmussen, Los Angeles, December 2014.

Julian Hoeber and Heather Rasmussen, Los Angeles, December 2014.