352 ON THE PLACE OF FISH IN 



narrow gauge on the Great Western Railway. In 

 both cases the amount of nitrogen compounds was 

 increased also. (See Appendix.) 



It is the oxidation of Carbon in the body which is 

 the chief source or origin of muscular power as apart 

 from muscle structure. The oxidation of Hydrogen 

 is known to have much the same duty, though the 

 extent is hardly so well established by experiment. 



As the result of the comparison of many sets of 

 observations we get the following table of 



Da jl y out . DAILY OUTGOINGS. 



goings. CARBON given off in Ib. oz. gr.* 



Carbonic acid by lungs . . . 320 



by skin ... 40 



Organic matter by kidneys . . 170 



,, by intestines . 308 



9 400 



HYDROGEN given off in 



Water formed in body by lungs and skin 1 70 



Organic matter by kidneys and 



intestines . . 100 



1 170 



OXYGEN given off in 



Carbonic acid by lungs ... 17 325 



by skin ... Ill 

 Organic matter by kidneys and 



intestines . . 357 



Water formed in body by lungs and skin 9 130 



2~2 47 



NITROGEN given off in 



Urea, etc. by kidneys . . 245 



Waste by intestines . . 46 



291 



* Reckon 438 [strictly 437*5] grains to oz. and 16 oz. to Ib. 



