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APPENDIX II. 



In these experiments the measured work was 

 performed in the short space of 3 J hours, whilst the 

 nitrogen estimated was that voided in the shape of 

 urea in 24 hours. It will, therefore, be necessary 

 to add to the measured work, that calculated for 

 respiration and circulation for the whole period of 

 24 hours. This amount of internal work was com- 

 puted, from the estimates of Helmholtz and Fick, to 

 be as follows : 



Internal Work. (Helmholtz and Fick.) 



Taking this estimate for internal work, the average 

 results of the treadwheel experiments may be thus 



* Since making use of this number, I find that Bonders 

 estimates the work of the heart alone, for 24 hours, at 86,000 

 metrekilograms, a figure which is higher than that above for 

 the combined work of circulation and respiration. 



