63 
It appears that the minimum amount of food eaten per day was 
during experiment No. 391, in which the diet consisted exclusively of 
bananas. This furnished only 22 grams of protein and 1,160 calories 
of energy, and while, as was to be expected, there was a loss of body 
protein, it is somewhat surprising- that the subject did not lose weight. 
This is presumably due to the large quantity of water ingested with 
the bananas. From Table 47 it is seen that the coefficients of diges- 
tibility in this experiment, for all the nutrients except fat. are very 
satisfactory and in each ease considerably above the average for all 
the tests with the subject. The body utilized over 90 per cent of the 
energy supplied by the diet, the corresponding average for the 16 
experiments being 84. 76 per cent. This can perhaps be accounted 
for on the supposition that the body, having so little nitrogenous 
material at its disposal, was compelled to use all supplied to the utmost 
advantage, or the subject may have had some idiosyncracy favorable 
to the digestion of bananas. 
The maximum food consumption during this series of experiments 
is noted for experiment No. 4<>:2. with a diet of apples, bananas, and 
almonds. During this experiment about three and a half time- as 
much protein and energy were consumed as in experiment No. 391. 
In this case the maximum average daily gain of protein (4.13 grains) 
was also observed. It is of interest to note that during the two 
experiments, representing, respectively, the maximum and minimum 
amounts of food eaten, the body weight remained constant. The fact 
that 79.9 per cent of the protein was digested and 8S.15 per cent of 
the energy was available indicates the high nutritive value of the 
combination of apples, bananas, and almonds. 
The high digestibilty of the almond, as compared with walnuts, 
Brazil nuts, and pecans, is shown by a comparison of the results of 
experiments Nos. 399 and 4<>:2 with those of experiments Nos. 4<><» 5 
404. and 4< >7. 
The coefficients of digestibility in experiment No. 397, where walnuts 
were used, are all lower than in No. 399. where almonds were eaten in 
place of walnuts. This is especially true of the protein and energy, 
the percentages being 62.56 and 78.87, and 74.48 and 86.17. respec- 
tively. In the other four experiments the combination of apples and 
bananas remained constant, while a change was made in the variety of 
the nut. In No. 402, where almonds were eaten, the coefficients are the 
highest, and in No. 407. in which pecans were used, the coefficients are 
the lowest. A reference to Table 46 shows that during experiment 
No. 4<>7 the amount of protein furnished by the diet was but 35.36 
grams per day. the lowest reported for any of the experiments in 
question. Again it is of interest to note that, with the exception of 
experiment No. 400, the coefficient of digestibility of protein varied 
directly with the amount consumed per day during the four experi- 
mental periods. 
