31 



In each of the two years included in the investigation the largest 

 amount of total food was eaten per man per day while the men were 

 at the hard and continuous Avork of felling and trimming trees and 

 swamping roads. In yarding logs the hauls were short and the men 

 got no respite from work. In the first study (No. 390) the amount of 

 protein eaten was very much larger than in any of the others and may 

 have been excessive. There is nothing in the recorded data to explain 

 this. The meats did not differ in kind, quality, or variety from those 

 used in the similar dietary (No. oOo) made the second year. The 

 total protein in the food eaten in dietary No. 393 was very nearly tlie 

 same as in the studies made when the men were at work drawing logs 

 to the landing. Very likely the protein in dietary No. 390 may be 

 above or that in dietary No. 393 may be below a normal amount 

 for these men. Possibly the average more nearly represents the 

 usual amount of protein contained in the food while the men are at 

 work chopping and yarding than either of the studies alone. The 

 lu'cds of the body resulting from the severe character of this kind of 

 labor are perhaps better indicated by the high fuel value (8,140 cal- 

 ories per man per day) of the food consumed, and this factor agrees 

 quite closely in the two studies. The fat is practically the same in 

 the two dietaries. Quite a little more of the total energy of the food 

 came from the carbohydrates and less from the protein in dietary 

 No. 393 than in dietary No. 390. 



There is very close agreement, which is doubtless more or less acci- 

 dental, in the quantities of nutrients and energy jn studies Nos. 391 

 and 394, made in different years while the men were drawing logs to 

 the landing. The food eaten in these two studies furnished on an 

 average one-sixth less protein and one-sixth less energy than in the 

 average of the tAvo studies (Nos. 390 and 393) while chopping and 

 yarding. The smaller quantity of food eaten in studies Nos. 391 and 

 394 was very likely due in part to differences in amount and character 

 of work done. The work of loading and unloading logs is less con- 

 tinuous than that of felling and trimming trees and swamping roads, 

 and the teamsters do not work nearly so hard on the comparatively 

 long haul to the landing as on the short hauls when yarding. There 

 would therefore be less bodily demand for food at such times. On 

 the other hand, it may be that the food supplied in studies Nos. 390 

 and 393 was better than that to which the men had been accustomed 

 before going into camp, and, as they had then been in the woods a com- 

 paratively short time, it would be natural that in such a case they 

 would eat more than after having had this kind of diet for several 

 weeks. In other words, even if the amount of work had been the 

 same in studies Nos. 391 and 394 as in Nos. 390 and 393, the amount 

 of food eaten might still have been less, because at the later period 

 the diet would seem less appetizing to the men who had been eating 

 it for a considerable length of time. 



