May, 1929] simplified technique for measuring energy 21 



DATA SHEET FOR ABSORBER METHOD 

 Respiration Experiment 



Subject Weight Date 



Chamber closed 



Preliminary ventilation started 



Temperature Deg. C. 



of Ventilating 

 Time of Chamber Current Barometer 



Wet Dry Dry 



Start M 



End M 



E. T Avg 



Absorber Weight Meter Readings Ldters 



1st 2nd 



End gms. 



Start " 



Diff 



Gas Analysis 



Aliquot Air Sample 

 Residual Chamber Air from Ventilating 



CO2 O2 R. Q. CO2 O2 R. Q. 



% % % % 



Start 



End 



Body Position Activity Record 



Very Active 



Hours Minutes Moderately Active 



Quiet 



Standing 



Lying 



which is placed over this crate and inserted in the water seal of the floor 

 platform. 



The chamber for small lambs is the same in principle. This consists of 

 a large sheet-metal can, open at the top, and supplied with a cover on top 

 which sets in a water seal. A correspondingly small crate to house the 

 animal is placed inside the can. Both chambers have an air intake open- 

 ing at the head end which consists of a male nipple to fit the coupling of or- 

 dinary garden hose, the air outlet at the opposite end being the same. 



Metabolism Stalls 



The laboratory contains four metabolism stalls which ma}^ be used 

 either for steers or for cows. At present only cows are being used. (See 

 Plate 6.) Two of these, used for dry cows, are located in one room. The 

 other two, used for milking cows, are located in another room so that sepa- 

 rate temperature conditions can be maintained, if desirable. 



In designing these stalls it was deemed essential to provide conditions 

 similar to those which prevail in a modern dairy in order to meet the just 

 criticism often heard, that during such experimental observations cows 



