IRRIGATION INVESTIGATIONS. 47 



simple mixed diet, and upon the metabolism of nitrogen, with numerous 

 analyses of the food materials used in the experiments. 



Bulletin 91, pp. 1$. — Nutrition Investigations at the University of 

 Illinois^ North Dakota Agricultural College, and Lake Erie College, 

 Ohio, 1896-1900.— -This bulletin reports the results of a study of the 

 diet of a teacher's family and of a mechanics' boarding" club at the 

 University of Illinois, Champaign, 111. ; of a club of women students 

 at the North Dakota Agricultural College, Fargo, N. Dak.; and of the 

 faculty and students at the college commons of Lake Erie College, 

 Painesville, Ohio, including numerous analyses of the food materials 

 used. 



Bulletin 98, pp. 67. — The Effect of Severe and Prolonged Muscular 

 Work on Food Consumption, Digestion, and Metabolism and the 

 Mechanical Work and Efficiency of Bicyclers. — This bulletin reviews 

 previous investigations on this subject, and reports studies of the food 

 consumption, digestion, and metabolism of three of the contestants in 

 a six-day bicycle race at Madison Square Garden, New York, with a 

 critical discussion by the professor of experimental engineering of 

 Cornell University of the mechanical work and efficiency of bicyclers 

 based upon data secured in these studies. 



Farmers' Bulletin 121, pp. 32. — Beans, Peas, and Other Legumes as 

 Food. — For note on this bulletin see page 45. 



Farmers' Bulletin 128, pp. 32. — Eggs and Their Uses as Food. — This 

 bulletin is noted on page 45. 



Yearbook of the Department of Agriculture, 1900, pp. 337-31+8. — The 

 Value of Potatoes as Food. — Summarizes the available information on 

 this subject. 



IRRIGATION INVESTIGATIONS. 



The irrigation investigations conducted under the direction of this 

 Office have pursued the same general lines as heretofore, the work 

 having been extended to meet the growing demand for information on 

 this subject as far as the appropriation would permit. 



As far as practicable, arrangements have been made to cooperate 

 with other agencies engaged in the study of irrigation questions. 

 These cooperative efforts include the agricultural colleges and experi- 

 ment stations of California, Washington, Montana, Idaho, Nevada, 

 Utah, Wyoming, Nebraska, Texas, Arizona, and New Mexico in the 

 arid region, and Wisconsin, Missouri, North Dakota, and New Jersey 

 in the humid region. The different State irrigation offices are also 

 being aided in the study of questions for which the States do not pro- 

 vide sufficient means. The cooperation with the State engineers' 

 offices includes Nebraska, Colorado, Wyoming, Utah, and Idaho, all 

 of the arid States in which such offices have been established. 



In accordance with the terms of the act creating this investigation, 



