284 EXPERIMENT STATION RECORD. [Vol.35 



" Birds may contract the disease by the ingestion of pure cultures of B. san- 

 guinarium. Birds fed upon the offal of other birds dead of this disease show 

 a mild nonfatal form of the disease tending to recovery. There is evidence that 

 recovery from this mild form produces more or less of an immunity. Further 

 investigation upon this point is needed. 



" The power of some of the red corpuscles of the affected fowls to take the 

 violet stain when the blood is diluted in Toisson's fluid is especially noticeable 

 in this disease. While the lesions produced in fowls which are infected with 

 B. sanguinarium resemble in many respects those produced by B. pullorum, and 

 although there is a still closer resemblance in the biological characters of the 

 two organisms, there is enough difference to warrant the conclusion that they 

 are distinctly different diseases." 



The rearing of turkeys with special reference to the blackhead disease, 

 P. B. Hadley (R. I. State Col. Ext. Bui. 2, n. ser. (1916), pp. 20, figs. 2).— A 

 general discussion of the subject in which is pointed out the importance of con- 

 trolling by suitable methods of feeding the development of parasites in the 

 intestinal canal and of preventing the invasion of the tissues. 



Diseases of poultry, W. Chenevard (Maladies des Volailles. Paris: J. B. 

 Baillidre d Sotis, 1916, pp. 90, figs. 27). — A small handbook. 



RURAL ENGINEERING. 



Fourteenth annual report of the Reclamation Service, 1914-15 (U. S. 

 House Representatives, 6jith Cong., 1st Sess., Doc. 38, pp. Vn-{-521). — This report 

 relates in particular to work completed and in progress during the fiscal year 

 ended June 30, 1915, but contains also information in regard to previous opera- 

 tions to show the methods, progress, and results of reclamation work. 



Classification of expenditures for irrigation work, F. H. Newell (Engin. 

 and Contract., Jf5 (1916), No. 9, pp. 201-204). — Expenditures for operation and 

 maintenance of irrigation systems are classified and discussed under five general 

 heads, as, (1) development, (2) carriage, (3) distribution, (4) drainage and 

 flood protection, and (5) structure depreciation. Ways of obtaining efficiency 

 and economy in recording and classifying expenditures on such a basis are 

 pointed out. 



Irrigation districts in California, 1887—1915, F. Adams (Cal. Dept. Engin. 

 Bui. 2 (1916), pp. 151, pis. 15). — This report is based on data gathered from time 

 to time during the past 15 years in cooperation with the U. S. Department of 

 Agriculture. Its main divisions deal with the original Wright Act of 1887, 

 the irrigation district act of 1897, irrigation district legislation since the act 

 of 1897, the status of California districts July 1, 1915, and court decisions 

 affecting California irrigation districts. Appendixes are included giving (1) a 

 statistical list of California irrigation districts organized under the Wright 

 Act, (2) a list of irrigation districts proposed under that act for which organi- 

 zation was not completed, (3) a list of irrigation district cases affecting Cali- 

 fornia irrigation districts and subjects dealt with in decisions, and (4) an out- 

 line of the California irrigation district act of 1897 as amended to 1915. 



Water resources of Illinois, A. H. Horton (Springfield, III.: Rivers and 

 Lakes Com., 1914, PP- VIII +40O, pis. 20, fig. 1). — This report, prepared in co- 

 operation with the U. S. Geological Survey, contains data on stream flow, pre- 

 cipitation, evaporation, drainage, and undeveloped water power and water 

 storage in Illinois. It includes stream profiles, rainfall records, and maps pre- 

 pared by the Weather Bureau of the U. S. Department of Agriculture; a gazet- 

 teer of Illinois streams; and an appendix, by G. B. Hills, on developed water 

 power and drainage districts of Illinois. 



