FEEDING EXPERIMENTS WITH ISOLATED FOOD SUBSTANCES. 



47 



Table XXVII. Summary of Data on Rat 70, fed for 160 Days on Mixtures Con- 

 taining Casein and Pea Legumin as the Only Proteins. Daily Averages. 



Period i, 69 Days. Casein 9 per cent, Pea Legumin 9 per cent. 



Date of 

 experiment. 



I9IO. 



Apr. 5 

 1 1 



18 

 25 



May 2 



9 

 16 



23 

 30 

 6 



'3 



June 



1910. 

 June 20 



July 



Aug. 



Sept. 

 Dead 



27- 



4 

 1 1 

 18. 



25- 



I 

 8. 



15 

 22 . 

 29. 



5 



12 



Intake. 



Nitrogen output. 



Body- 

 weight. 



gm. 



I7I-7 



160.O 



157-8 

 162.5 

 151 .0 

 141 .2 

 128.6 



144-5 

 152.8 



157-8 



160.6 



N-utilization. 



Food. Nitrogen. Urine. Faeces. Total. 



gm. 



gm. 



gm. 



gm. 



gm. 



p. ct. 



9.6 



5-9 

 8.9 

 5-9 

 4-4 

 4.2 



5-3 



6.8 



6.9 



5-3 



0.267 

 o. 164 

 0.249 

 164 

 122 

 1 1 5 

 145 

 0.186 

 0.187 

 0.143 



159 

 181 

 179 



153 

 118 

 0.075 

 o. 130 

 o. 131 

 0.139 

 o. 124 



0.026 

 0.015 

 0.016 

 0.016 



O.OI I 



0.017 

 0.009 

 0.022 

 0.021 

 0.015 



.85 



196 



195 



169 

 129 

 0.092 



0.139 

 0.153 



o. 160 



0.139 



90 



91 



94 

 90 



9' 



85 

 94 



88 



89 

 90 



Period 2, 91 Days. Pea Legumin 18 per cent. 



92 



87 



88 

 90 

 90 



87 

 90 

 90 

 90 



91 

 90 

 86 

 62 



N-balance. 



gm. 



-f O.082 



O.032 

 + O.O54 



0.005 



o . 007 

 + O.023 

 + O.O06 

 + O.033 

 + O.027 

 + O.OO4 



+O.OOI 

 + O.OIO 

 + O.OO3 

 + 0.02I 

 +O.030 

 + O.025 

 + O.024 

 + O.O44 

 + 0.022 

 + O.029 

 + O.035 

 +O.OI6 

 o . 06 1 



Rat 7 1 . This rat was fed during Period 1 with a mixture con- 

 taining casein 12, glutenin 6, sugar 15, starch 29.5, lard 30, agar 5, 

 salt mixture I 2.5 per cent. This contained 2.69 per cent nitrogen. 

 During Period 2 the diet contained casein 12, glutenin 6, sugar 15, 

 starch 24.5, lard 35, agar 5, salt mixture I 2.5 per cent, with 2.68 

 per cent of nitrogen. During Period 3 the diet consisted of glutenin 

 16.4, sugar 13.6, starch 22.3, lard 40.9, agar 4.5, salt mixture I 2.3 

 per cent, and contained 2.60 per cent of nitrogen. Throughout 

 Period 4, the diet contained glutenin 18, sugar 15, starch 14.5, lard 

 45, agar 5 and salt mixture I 2.5 per cent. This diet contained 2.83 

 per cent of nitrogen which belonged wholly to glutenin. 



Rat 71 is still alive at the present writing after 217 days of 

 exclusive diet containing glutenin as its only protein, and 286 days 

 including the casein and glutenin period. 



