ANALYTICAL EVIDENCE. 



283 



NOTE (1), p. 12. 

 CONSUMPTION OF OXYGEN BY AN ADULT. 



An adult man 



According to 



in 24 hours 



cubic in. grains. 



Lavoisier and Seguin 46,037 15,661 



Menzies 51,480 17,625 



Davy 45,504 15,751 



Allen and Pepys ... 39,600 13,464 



NOTE (2), p. 13. 

 COMPOSITION OF DRY BLOOD (see iiote 28). 



In 100 parts. In 4*8 lbs. Hessian = 36,864 grains. 



Carbon 51'96 19154*5 



Hydrogen... 7*25 2672*7 



Nitrogen ... 15-07 5555*4 



Oxygen ... 21*30 7852*0 



Ashes 4*42 1629*4 



100-00 36864*0 



Grains. Grains. 



19154*5 carbon form, with 50539-5 oxygen, carbonic acid. 

 2672-7 hydrogen do. 21415-8 do. water. 



Sum = 71955*3 do. 

 Deduct oxygen present") 



in blood 1= 7852-0 



Remain ... 64103*3 grains of oxygen, required 

 for the complete combustion of 4*8 lbs. of dry blood. 



It is assumed, in this calculation, that 24 lbs. of blood 

 yield 4*8 lbs. (20 per cent.) of dry residue. The re- 

 mainder, 80 per cent., is water. 



