Bauhaus-Universität Weimar

Reports of Visits to Foreign Laboratories, vol. 3 (1913-16) [Illustrated Typoscript in 7 volumes] Reproduced with the kind permission of Dr. Cecil E. Leith
Benedict, Francis Gano
I Medical Gliale. 
Professor His. 
While in Berlin we were fortunately present at the opening of this 
new clinic, which is certainly well-equipped and well-ordered. I was, 
of course, interested in the chemical laboratory and particularly in 
the Jaquet respiration apparatus (see figures 48 to 51) which had been 
transferred from the old clinic and was being installed in the new 
clinic, although of course it was not yet in running order. I noted 
particularly that the walls of the Jaquet respiration apparatus in 
this case were made of heavy glass, set into an iron framework with 
wax cement, and that even the floor was of heavy glass with a number 
of seams. It seemed as if there would be many opportunities for a 
leak. As the space under the bed was not used, it was cut out of 
the respiration chamber and therefore did not form a part of the extra¬ 
neous volume of air. The hygrometer thermometers were graduated in 
tenths from 0 to 44 degrees. They were made by Bleckmann and 3urger 
and are listed in their catalogue as Bos. 23 and 24 respectively. I 
noted particularly the manner of wetting the bulb of the wet-bulb ther¬ 
mometer. Apparently considerable care was taken but the method did 
not look particularly good. The bulb was round and not long and 
drawn out. Heavy strings or cords hanging from the bulb fell into 
a small glass tube 6 millimeters in outside diameter and were wet by 
capiallary attraction. It would seem very improbable that the 
capillary attraction could be sufficient to cover the bulb and keep 
it thoroughly wet. 
I had a most delightful evening with Professor His at his house,


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