Bauhaus-Universität Weimar

Reports of Visits to Foreign Laboratories, vol. 2 (1910) [Illustrated Typoscript in 7 volumes] Reproduced with the kind permission of Dr. Cecil E. Leith
Benedict, Francis Gano
Physiological Laoora-cory of une University or Heidelper^. 
Professors Kossel and Conmeim. 
Plie laboratory is in charge of Professor Kossel, and Professor Cohnheim 
is his associate. Professor Cohnheim is much interested in animal physi¬ 
ology» Lut Kossel, whose speciality is pure physiological chemistry, does 
not like or approve of animal experiments. He allows Cohnheim considerable 
latitude in his experiments, however, but the animals cannot be kept over 
the summer recess as it costs so much to keep and feed them. As the appro¬ 
priation for the Department is not sufficient for this, the animals are 
killed by injecting chloroform into the heart. Thus it is seen that there 
is no opportunity for Cohnheim to carry out metabolism experiments covering 
a long period. 
Quite recently a Dr. Best has opened a private laboratory in Heidelberg 
for experimental research. He is a practitioner interested in internal 
medicine, 'particularly stomach diseases. In this laboratory, he has small 
rooms fitted with tables for operating, and also a yard in tho rear where 
animals can be kept in very good condition. In a visit I paid to this 
laboratory, I found the equipment very simple and practical. 
Operation on dog for duodenal fistula .-On the first day of ry visit to 
the laboratory of Dr. Best, I saw an operation for duodenal fistula made by 
Professor Cohnheim on a large St. Bernard bitch. The animal was first given 
an injection of morphine between the shoulder blades, and in fifteen minutes 
became somewhat stupid. She could then be handled and placed on the table 
without offering any resistance. 'She animal was next etherized, the morphine 
making a minimum amount of ether effective. As a large amount of ether is 
necessary when it is used alone, Cohnheim prefers the morphine-ether narcosis.


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