OFFICE OF EXPERIMENT STATIONS. 223 



planned to make investigations along this line with the smaller Rosen- 

 t lud calorimeter. In Maine and Minnesota the studies on cereals will 

 be continued. In the former, State plans are being made for dietary 

 studies in logging camps, the conditions for such studies being espe- 

 cially favorable at this time. The work performed at these camps is 

 very arduous, often covering from fifteen to eighteen hours per day 

 of hard labor under severe conditions of cold and wet. Dietary studies 

 under these circumstances will doubtless add much valuable infor- 

 mation regarding the food requirements of men laboring under severe 

 conditions. In Tennessee it is proposed to continue the digestion 

 experiments with different legumes and to enlarge the number of 

 dietary studies among the small farmers of that State. In Illinois the 

 study of meats will be continued in the same lines as heretofore. 

 Special attention will be given to the experiments on the effects of 

 different methods of cooking on the nutritive value and digestibility 

 of meats. The facilities offered for this work at the University of Illi- 

 nois have been much improved and the funds allotted by this Depart- 

 ment for this investigation have been increased. In California the 

 investigations on the dietetic value of fruits will be continued on a 

 larger scale than previously, including both dietary studies and diges- 

 tion experiments. The studies already conducted have aroused much 

 local interest in California, and the University of California is cooper- 

 ating heartily in this work. In Vermont the investigations in coopera- 

 tion with the State University, proposed for last year but unavoidably 

 postponed, will be conducted on a larger scale than originally planned. 

 They will include especially the study of farmers' dietaries, with par- 

 ticular reference to the place of milk and dairy products in the diet. 

 In New York, at Columbia University, a study of sulphur and phos- 

 phorus metabolism has been undertaken. This will include digestion 

 experiments in which the income and outgo of nitrogen, sulphur, and 

 phosphorus will be determined, and the "balance" of these elements 

 compared. This is a new feature in these investigations. 



FURTHER OPPORTUNITIES FOR NUTRITION INVESTIGATIONS. 



The evidences of popular and scientific interest in the nutrition 

 investigations of this Department continue to multiply. Scientific 

 publications at home and abroad refer to these investigations more 

 and more frequently and with increasing approval. The results of 

 these investigations are being incorporated in other investigations 

 and in scientific works on this subject, and the apparatus and methods 

 devised by our investigators are being adopted both at home and 

 abroad. There is a constantly increasing demand for popular and 

 technical publications and an enlarged correspondence. Our publi- 

 cations are being used to an unusual extent in connection with the 

 courses of instruction in domestic science in schools of all grades in 

 tli is and other countries, and are also much sought after byVomen's 

 organizations interested in the promotion of home economics and by 

 physicians. 



The lines and methods of investigation have now been so well 

 worked out that it is believed the time has come for the wider exten- 

 sion of these investigations in certain directions. While a consider- 

 able number of dietary studies have been made, these have by no 

 means covered the variety of conditions existing in different parts of 

 this country and among people of different occupations. A more 

 systematic and thorough attempt should be made to collect reliable 

 data regarding the food habits of our people. We need, for example, 



