DIETARY STUDIES OF A WALKING TRIP. 163 
the diet furnished considerably less protein and energy than 
are called for by the commonly accepted dietary standards for 
men at light to moderate muscular work. No positive ill ef- 
fects were noted, except a loss in weight of about five pounds, 
and this was regained in less than a week after the return from 
the journey. 
The studies may be considered of interest as an indication 
of the nutritive value of the food materials available to the pe- 
destrian carrying his daily food supply. The foods selected 
were on the whole well adapted to the conditions, though it is 
a question whether some of the less concentrated foods might 
not have been more largely included to advantage. In the 
attempt to reduce bulk and weight there was apparently a ten- 
dency to restrict unconsciously the food consumption as well, 
and perhaps to an undue extent. It is not probable that the 
amounts eaten were adequate for the body needs particularly 
as regards energy. The condition was therefore one of partial 
inanition, and so limited a diet could hardly have continued 
for any considerable period without serious injury. The 
studies well illustrate how in case of need the reserve forces 
of the body may be drawn upon for a short time without ap- 
parent detriment, as well as the necessity of continuing in- 
vestigations of this nature for long periods before drawing 
definite conclusions. 
