NUTRITION INVESTIGATIONS. 445 



nuts. The results of the experiment with the infant substantiate those 

 of similar experiments elsewhere. The digestion experiment with a 

 fruit and nut diet seems to indicate that the nutrients and energy in 

 such a diet may not be much below that of the nutrients and energy 

 in the average mixed diet. In some of the work the metabolism of 

 nitrogen was also studied. 



COMPOSITION OF CALIFORNIA FOOD MATERIALS. 



In connection with the investigations analyses of a considerable 

 number of California food materials, more especially fruits and Chi- 

 nese food materials, have been made. Reference has already been 

 made to the quite detailed study of the composition and economic 

 value of the Chinese vegetable food materials found in the Chinese 

 markets of San Francisco. 



PUBLICATIONS. 



The results thus far published are given in the following bulletins 

 of the Office of Experiment Stations: Bui. No. 68, A Description of 

 Some Chinese Vegetable Food Materials and their Economic and 

 Nutritive Value, by W. C. Blasdale; Bui. No. 84, Nutrition Inves- 

 tigations at the California Agricultural Experiment Station, 1896- 

 1898, by M. E. Jaffa; and Bui. No. 107, Nutrition Investigations 

 Among Fruitarians and Chinese at the California Agricultural Exper- 

 iment Station, 1898-1901, by M. E. Jaffa. 



CONNECTICUT. 



The investigations in this State have been carried on in connection 

 with the Storrs Experiment Station and Wesleyan University, and 

 under the direction of Prof. W. O. Atwater, who, as special agent in 

 charge of the nutrition investigations, also has the general oversight 

 of the work in other parts of the country. Prof. C. D. Woods, now 

 of the Maine State University and Experiment Station; Prof. E. B. 

 Rosa, of Wesleyan University; Dr. F. G. Benedict, and Mr. A. P. 

 Bryant have shared in the direction of the work. The details of the 

 inquiry have been carried out with the assistance of a considerable 

 number of persons, several of whom have been associated with the Storrs 

 Experiment Station and Wesleyan University. 



The chief line of inquiry has been the study of the metabolism of 

 matter and energy in the human body by means of the respiration 

 calorimeter, briefly described on page 446. In addition there has 

 been a considerable amount of work along other lines, including the 

 compilation of results of earlier investigations and other literary 

 work, digestion experiments, analyses of food materials and excretory 

 products, studies of dietaries, and the developing of apparatus and 

 methods. 



