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
out Germany as educational films. He very kindly ran off a number of these 
for me, showing the care used in handling the milk as illustrated by pictures 
of the cows, the stables, washing the cows, milking, etc. A particularly 
interesting film from an educational point of view was the one illustrating 
the story of a mother who had fed her infant store or milk-cart milk and who 
had been obliged to take it to the hospital for treatment. This showed the 
arrival of the mother at the hospital with her baby in her arms, the meeting 
with the porter, her visits to the different wards, her meeting with the 
Director, the reading of a letter from the doctor to the Director, her an¬ 
xiety over the health of her child and happiness when shown the good condi¬ 
tion of the infants in the hospital, with of course the grand finale when 
she comes to get the child and finds it perfectly well. It is a most im¬ 
pressive exhibition. 
The respiration ap:aratus is in a special room in the basement, 
which is very well lighted and well equipped. It is exactly like one which 
I saw in Berlin and while very complicated is very good. It has one great 
advantage in that the respiration chamber and pump are in one tank. The 
chamber is removed from the water by a crane and set of pulleys. With this 
apparatus the carbon-di oxide production and oxygen consumption cannot be 
determined in short periods and the periods must be at least 2 to 3 hours 
long. Por the determination of the oxygen a large gasometer- is used and the 
water is weighed exactly as Oppenheimer first used it. One point which 
interested me was their statement that they could not always rely upon 
the factory analysis of the oxygen: they said that frequently they had 
received oxygen marked as 98 to 99 per cent but had found it as low as 
92 per cent. The carbon dioxide absorbed by the caustic potash is deter¬ 
mined by the Presenius method of weighing. This takes several hours.


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