Bauhaus-Universität Weimar

Titel:
Reports of Visits to Foreign Laboratories, vol. 1 (1907) [Illustrated Typoscript in 7 volumes] Reproduced with the kind permission of Dr. Cecil E. Leith
Person:
Benedict, Francis Gano
PURL:
https://digitalesammlungen.uni-weimar.de/viewer/image/lit39744/168/
respiration apparatus for animals, Prof. Tangl has the problem-of de¬ 
termining accurately the amount of marsh gas given off. This must 
be done by the use of electrical combustion furnaces to avoid the in- 
trôduction of unburned gases into the air of the room. 
The furnaces are somewhat similar in construction to those used 
by Hagemann (see Fig. J--) but are not so large. A series of seam¬ 
less block tin pipes bringftthe sample of gases to the furnaces and takeA^ 
it away. The apparatus is shown in detail in Fig. 44. 
Metabolism experiments with fowls.—In connection with his agri¬ 
cultural experiment station work, Prof. Tangl has made many experi¬ 
ments regarding the metabolism of fowls and has constructed a very 
neat cage for them. This cage, which is made of galvanized iron, 
iw shown in Fig. 45. 
Pes'oiration calorimeter laboratory.—One of the most elaborately 
installed laboratories that I found on my trip was this respiration 
calorimeter laboratory of Prof. Tangl. A general view is shown in 
Fig. 46. In this room he has a large respiration chamber, not 
calorimeter, for use with horses or oxen, provided in the floor with a 
rolling treadmill which can be inclined for experiments in walking up 
or down grades. In this room are also placed an ammonia refrigerating 
machine for depriving the air of moisture and mercury meter pump on the 
Blakeslee plan, constructed by Hart of Poughkeepsie, a set of meters 
and barium hydroxide pipettes for use with the Pubner-Voit method of 
measuring the sample of the air current, and finally, a small respi¬ 
ration chamber, not calorimeter, for swine, with the absorption of 
carbonic acid and water as developed at Middletown. Unfortunately, 
all of this apparatus is not in thorough working order. For example, 
the meter pump has given much trouble and the respiration chamber has
        

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