DIETARY STUDIES OF A WALKING TRIP. 143 
DIETARY STUDIES OF A WEEK’S WALKING TRIP. 
BE Hol: KNIGHT. « 
—0¢+0 

The studies summarized in the following report comprise in- 
vestigations as to the kind and amount of food eaten by two 
young men of sedentary habit while on a week’s walking trip 
through the White Mountains. 
The studies were incidental to the trip itself, which was taken 
as a means of spending a few days of the summer vacation out 
of doors in an unfamiliar part of the country. In pursuance 
of this plan, camp equipage was included in the outfit, and the 
entire food supply, aside from about two days’ rations taken 
from home at the start, was purchased in as portable a form as 
possible along the way. 
Since the manner of life, and the diet as well, were quite 
different from those to which the subjects were ordinarily ac- 
customed, it was considered of interest to record the data which 
are presented in detail beyond. 
So far as is known to the writer no studies of precisely this 
nature have as yet been published. Observations have been 
made of the food consumption of professional pedestrians, nota- 
bly Weston, as well as soldiers on the march, bicyclists, college 
boat crews and others engaged for short periods at severe mus- 
cular exercise. Numerous investigations have also been con- 
ducted in which subjects without previous training have walked 
from twenty to fifty miles per day. Thus, in 1882, North, in 
an experiment reported elsewhere,} walked on single days dis- 
tances of from thirty to forty-seven miles carrying a load of 
twenty-seven pounds. In most of these researches, however, 
the diet was restricted as to either the kind or amount of food 
eaten, and the results, while of value as an index to the body 

* The writer desires to express his indebtedness to Mr. C. H. Collester for his as- 
sistance in acting as a subject, and for many valuable suggestions incorporated in the 
report. 
+ U.S. Dept. Agr. Office of Experiment Stations Bul. 45. pp. 120, 31. 
