28 REPORT OF OFFICE OF EXPERIMENT STATIONS. 



FOOD AND NUTRITION PUBLICATIONS. 



The food aiul milritiou ])ul)li('ations issued during tlio past year 

 have inchided tliree technical l)ulletins, one Farmers' Bulletin, an 

 article for the Yearbook of the Department, and an article for the 

 Animal IJepoi't of the Ollice of Experiment Stations. The subjects 

 treated in these publications are as folloAvs: Studies of the Food of 

 Maine Lumbermen; Dietary Studies at the Government Hospital for 

 the Insane, "Washington, D. C. ; Dietary Studies witli Harvard Uni- 

 versity Students; Canned Fruit, Preserves, and Jellies: Household 

 Methods of Preparation; The Respiration Calorimeter, and The 

 Work of the Experiment Stations which Relates to Food. 



In addition, four technical bulletins and two Farmei-s' Bulletins 

 were prepared for publication, and three Farmers' Bulletins and one 

 circular were extensively revised. 



IRRIGATION AND DRAINAGE INVESTIGATIONS. 



The work of the irrigation and drainage investigations of this 

 Office includes irrigation, drainage, farm machinery, and general 

 agricultural engineering. This work is under the general direction 

 of Dr. Elwood Mead. The work of the Washington office is divided 

 into four general classes, each assigned to one person, as follows: 

 Drainage, C. G. Elliott; field work in irrigation, S. M. Woodward; 

 irrigation institutions, R. P. Teele ; and farm machinery, C. J. Zintheo, 

 For the field work in irrigation, the arid region is divided into two 

 sections — the central district, with headquarters at Cheyenne, Wyo., 

 in charge of F. C. Herrmann, and the Pacific district, with head- 

 quarters at Berkeley, Cal., in charge of S. Fortier. Studies of irri- 

 gation in the humid States are directed from the Washington office. 



IRRIGATION. 



The season of 1005 was the eighth in which the irrigation investi- 

 gations of this Office were carried on. The report of the work done 

 in 1905 will be better understood if it is prefaced by a brief review of 

 what has been done since the inauguration of this work. 



At the time this work was begun there was no certain information 

 as to how much water was needed to irrigate an acre of land and few 

 measurements showing how much was being used. Engineers build- 

 ing canals made estimates of the quantities needed, varying from 1 

 acre-foot per acre to 7 acre-feet j)er acre, and judges in defining rights 

 had no more information and no more definite standards. The first 

 work of this investigation, therefore, was to measure the quantities 

 of water used in general practice, in order to furnish to engineers, 



