1017] CONTENTS. VII 



Page. 



Rinderpest. — Preparation of antiserum, Shilston 480 



The pii-oplasmoses and means for their prevention and control, Alessandrini. . . 430 



The pathogenic action of Ixodidse, Parodi 481 



Application of the complement-fixation test to tuberculosis, Biu-ns et al 481 



Complement fixation in tuberculosis with "partial antigens," Woods et al . . . . 481 



Influence of certa>in organic substances on the tubercle bacillus, Lewis 481 



Typhoid vaccine on tuberculous gtiinea pigs, Baldwin and L'Esperance 481 



The presence of the tubercle bacillus in butter, Marchisotti 481 



Tuberculosis in the goat, Moussu 481 



Age determination of cattle in different coimtries 482 



Health herd book for breeders of pure-bred cattle, Moore 482 



A rational and successful method of preventing abortion in cattle, Peters 482 



Abortion in dairy cattle, Williams 482 



A report upon an outbreak of stomatitis contagiosa, Gibbs 482 



A new variety of Norurdia bovis, Actinomyces lanfranchii, Sani 482 



Sheep poisoned by western goldem-od (Soliclago spectabilis), Lockett 482 



The kidney worm of swine {Ste2'>hanunis dentatus), Luaces 482 



"Piroplasmosis," "equine malaria," Stoute 483 



Parasites of the dog in Michigan, Hall 483 



Trichina spiralis in the polar bear, Fox 483 



Mortality statistics of fiftli national egg-laying contest, Missouri, Horton 483 



Fermenting properties of Bacleriura pullorurn and B. sanguinarium, Goldberg. 483 



Is Leucocytozoon anatis the cause of a new disease in ducks? Wickware 483 



RURAL ENGINEERING. 



Irrigation of rice in California, Robertson 483 



Annual irrigation revenue report of the Government of Bengal for 1915-16 484 



River discharge, Hoyt and Grover 484 



Geology and water resources of Nevada, Meinzer 484 



Ground water in San Simon Valley, Arizona and New Mexico, Schwennesen. . . 485 



Report [of the California] State water problems conference 486 



Ditch flow found quickly and accurately with new portable weir, Fuller 486 



Determining daily discharge of canals affected by check control, Humphrey.. . 486 



The turbidity of water, Rado and Trelles 486 



Silt observations at Yuma gauging station, compiled by Lawson 486 



Sluicing silt to reduce canal leakage, Barnes 487 



Modern practice in wood-stave pipe design. Partridge 487 



Analyses of Fargo city water supply, Hulbert 488 



Investigations on the filtration of drinking water, I, Kisskalt 488 



New process for chemical sterilization of drinking water in the field, Rhein 488 



The manner of action of biological sewage purification media, Messerschmidt. . 488 



A new type of trickling filter, Nasmith 488 



Brushwood as a medium for sewage filters, Phelps 489 



Regulations respecting highways, 191,'i, Macdiarmid 489 



Intelligent use of road oil reduces maintenance, Agg 490 



Colorimetric test for organic impurities in sands, Abrams and Harder 490 



Effect of water on the strength of concrete, Abrams 490 



Bearings for agricultiu'al machinery. Page 490 



Review of mechanical cultivation, Ringelmann 490 



A press for the Georgia carrier, Blake and Haines 490 



The drying of potatoes, Dantin 491 



Some details in the construction of wooden hoop silos, Charlton 491 



Housing of chickens, Dryden 491 



RURAL ECONOMICS. 



A theory of rural attitudes, Bernard 491 



Farm organization, balance between crops and stock, etc., Livermore 491 



Minor articles of farm equipment, Humphrey and Yerkes 491 



Food preparedness, Seager and Chaddock 491 



A farm census of New York State 491 



Redistribution of farm land in France, Cabaussel 491 



The Torrens system, Massie 492 



Agricultural labor, Ponsonby 492 



[Agricultural wages in Sweden, 1915], Richert 492 



