42 
Proceedings of the Royal Society of Edinburgh. [Sess. 
Table I. 
First Study, 1915-16, 
per Man per Day. 
Second Study, Feb. 1917, 
per Man per Day. 
Third Study, Nov. 1917, 
per Man per Day. 
Protein in 
Grams. 
Fat in 
Grams. 
Energy in 
Calories. 
Family 
Income. 
Protein in 
Grams. 
Fat in 
Grams. 
Energy in 
Calories. 
Family 
Income. 
Protein in 
Grams. 
Fat in 
Grams. 
Energy in 
Calories. 
Family 
Income. 
M. 62 
831 
86-2 
2674 
25/ f 
86-6 
79-3 
3088 
25/ t 
89-4 
74-7 
3196 
31/ 1 
S. 84 
86-0 
93-0 
2836 
27/ 1 
77*5 
63-8 
2530 
30/ 
82-3 
66*0 
2289 
38/ 
N. 31 
128-9 
128-2 
4174 
36/ 
1030 
67-8 
3112 
39/ 
136-1 
77-2 
4079 
44/ t 
H. 47 
88-9 
67-2 
3003 
22/ 
85-0 
62-3 
2714 
23/5 
100-1 
77-2 
3159 
34 / 
M. 112 
88-0 
97-5 
3318 
30/ 
105-9 
98-1 
3476 
55/6 
119-9 
134-6 
3650 
41/— 61 / + 
H. 38 
80-7 
80-0 
2691 
40/ 
114-2 
77-7 
3314 
40/ f 
97-7 
68-3 
3083 
40/ f 
M. 65 
75-5 
70-9 
2491 
30/ 
91T 
68-2 
2844 
71/ + 
12P2* 
96-0 
4220 
90/ f 
N. 150 
148-4 
105-3 
3568 
25/ 
138-6 
112-8 
3690 
35/6 
105-0 
92-7 
3202 
48/ 
Averages 
97-4 
91 
3094 
29/44 
100-2 
78-8 
3096 
39/11 
106-5 
85-8 
3360 
47/ 
Consideration of Table I shows that five of the diets had increased in 
energy value at the last study. The average increase amounted to 264 
Calories per man per day, but was chiefly confined to two families (M. 65 
and N. 31). In fact, excluding those two very generous diets, the average 
energy value of the six showed no change, being 3096 Calories. 
Six families show an increase in protein consumption, the average over 
the whole being 6*3 grams ; and five show an increased use of fat (averaging 
7 grams per man per day). 
The most important change in the personnel of the families studied 
is that during the 1915 studies two, during the February studies three, 
and in November five of the householders were absent on military service 
(marked f). The father’s enlistment resulted, in each case, in an increase 
of the family income. 
At the first investigation the income of the eight families varied from 
22s. to 40s. per week, in February from 23s. to 7ls., and in November from 
31s. to 90s. 
At the second investigation those four families whose incomes had not 
increased had a poorer diet, and those with a higher income had a more 
generous diet than when previously studied. This is true also, with one 
exception, of the third studies, if the particular circumstances of two of 
the families are taken into account. Family S. 84 appears from the table 
to have a better income in November than in February, but in reality, 
* In this family there is a possibility that an overestimate of the food was made through 
the inclusion of some flour purchased but not consumed. 
