338 Proceedings of Royal Society of Edinburgh. [sess. 
follow the average. Study E is, however, highest in proteid, 
while B is considerably lower than the others. 
Study B is, again, noticeably lowest in fats, but is of high 
■carbohydrate value, and closely approaches the average of energy 
value. 
In Study A, the large amount of fat probably accounts for the 
slightly higher cost. The high energy value in D results from 
the large amount of fat associated with proteid and carbohydrates, 
both of which are over the average in these studies. 
The amount of proteid in each one of these diets is in excess 
of the amount allowed in any dietary standard, the average 
exceeding the 125 grammes daily of Atwater by 18 grammes, 
and the 130 grammes of Moleschott by 13 grammes. When, 
however, this proteid intake is compared with Chittenden’s 
results, it is seen how greatly his requirements are exceeded. 
If the highest proteid value in his work — soldiers on 55 grammes 
per man per day — is taken, and compared with the average in the 
present — 143 grammes, — we find the proteid ingested in the latter 
case is more than twice and a half the amount in the former. 
The smallest amount of proteid taken exceeds 55 grammes by as 
much again — the highest proteid is just short of three times 
55 grammes. 
In Study E, the students were healthy, active, young women. 
On contrasting this with the other studies, one is struck with 
the high proteid value of their diet (expressed per man per day). 
The fat just touches the average, and the carbohydrate falls 
below it. Although general conclusions cannot be drawn from 
one study, it is interesting to see that this is in direct opposition 
to the popular idea that women consume relatively less proteid 
•than men, and more carbohydrate. 
(B) Proportion of Animal and Vegetable Proteid. 
Bubner* considers that in a properly balanced diet the 
animal should exceed the vegetable proteid. These studies 
show the proportion that Biibner thought important, and give 
practically the percentage — 60 per cent. — that he considered 
* Zeitschrift f. Biologie, KF., Band iii., 1885, p. 374. 
