TROPICAL FOOD MATERIALS 63 



NAINI GAOL. 



Protein absorption from gram dal . . No. 62a shows 65-9 per cent. 



62& 65-5 

 arhardal a,nd\ 



vegetables / " 55a " 83 8 



arhardal and ""\ _, 



vegetables / " 556 " 83 8 



urid dal 56 69-2 



LUCKNOW GAOL. 



Protein absorption from gram dal . . No. 69 shows 66-8 per cent. 



70 65-7 



71 68-2 



C 



arhardal and I " 80<fi 



vegetables " 



arhar dal " 81'2 



AGRA GAOL. 



( No. 77^1 



78 I 

 Protein absorption from gram dal . ,-c ' Lr. j-shows 62*9 per cent. 



I " 83J 



arhar dal ,, 91 ,, 73-6 



arhar dal and ^ Q0 



vegetables " 82 



arhar dal and Qr - 70.0 



io'o 



, i 1 



vegetables 



urid dal and 



vegetables | 8g J 



The lowest figures were obtained in experiments on prisoners 

 in Agra Gaol, not only for the protein absorption from the pulses, 

 but also for that of the cereals. The explanation of this was the 

 more than ordinary contamination of the foodstuffs, and also, 

 in the case of the pulses, the very large quantities of these 

 materials that were given in the dietaries. An examination of 

 the experiments, Nos. 85, 86, 88, and 91, from which the absorp- 

 tion is very poor, shows that about 50 per cent, of the total 

 nitrogen of the diets is derived from pulses, and there can be 

 little doubt but that the quantity of these foodstuffs from which 

 the best absorption is obtained has been passed. Thus 



No. 85. 

 Wheat .. 14 ozs. presents 6-3504 grms. N. U total intake of 



f T ua , r , . 10 . " nitrogen per man 



Urid dal .. 4 ,, ,, 4-1960 lailv of 17-^24 



Gram dal.. 4 3-0840 



Vegetables 6 ,, 0-5000 J g 



Of this only 10-2509 grammes nitrogen were absorbed, or 

 584 per cent, of the total nitrogen offered in the diet ; 7-2815 

 grammes nitrogen were recovered from the faeces. 



