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Page. 



On the concentration of antitoxic sera, Homer 680 



A multiple pipette for the complement- fixation test, Buck 680 



Hemolytic streptococci found in millc, Davis 680 



A study of colon bacilli isolated from horse, cow, and man. Murray 681 



The mode of infection in pulmonarj' distomiasis. Nakagawa '. 681 



Investigations of foot-and-mouth disease, IV, Kallert 681 



Mortality in Germany due to Simulium reptans. Matthiesen et al 681 



Methods of using the agglutination test in contagious abortion. Seddon 681 



Different types of streptococci and their relation to bovine mastitis, Mathers. . 681 



Control and eradication of infectious mastitis in dairy herds. Moak 682 



Effects of feeding cotton seed and its products to swine, Roberts 682 



Experiments with fiartmum TmWomm. — Toxicity of infected eggs, Rettgeretal. 683 



Morpholog>- of adult and lar\-al cestodes from poultry, Gutberlet 683 



The etiolog^^ of blackhead. Smith 683 



Aberrant intestinal protozoan parasites in the turkey, Smith 684 



Easstilesia tricolor, a common parasite of rabbits in tiie United States, Hall 684 



EURA.L ENGINEERING. 



Reports on irrigation for the year 1915, Drake and Peters 684 



Venturi meter succeeds in irrigation 684 



Determination of the maximum storm-water flow, Grunsky 684 



Determination of maximum stream flow, Gininsky 684 



Control of Colorado River as related to protection of Imperial Valley. Allison. . 685 



The drainage of the humid and saline soils of the Eg>-ptian Delta. (_ atzeflis 685 



The results of physical tests of road -building rock. Hubbard and Jackson, jr.. . 685 



Construction and maintenance of earth roads, Edwards 686 



Brick roads, Peirce and Moorefield 686 



Rules and regulations for the Federal Aid Road Act, Houston 686 



Factors of apportionment to States under Federal Aid Road Act for 1917 686 



Reports of the state roads commission [of Marj'land] for the years 1912-191 5 686 



Report of State Highway Department of Washington to October 1, 1914, Roy. . 686 



Bridge foundations, Burnside 686 



Economy in bridge design and construction, Joyce 687 



Value of the high -pressure steam test of Portland cements, Wig and Da\'is 687 



Testing the belt power of a tractor, Gee 687 



Mechanical tillage experiments at Grignon, Bretigni^re and Ringelmann . . . 688 



Dust explosions and fires in grain separators, Price and McCormick 688 



Combination bams for prairie farms, Greig and Shaw 689 



Dairj' bams, ice and milk houses for prairie farms, Greig and Shaw 689 



Beef cattle bams for prairie farms, Greig and Shaw 689 



Horse bams for praine farms, Greig and Shaw 690 



Sheep barns for prairie farms, Greig and Shaw 690 



Piggeries and smokehouse for praine farms, Greig and Shaw 690 



Poultrv' houses for prairie farms, Greig and Baker 690 



The pullet la>ing house, Shoup 690 



Commercial poultn,- house equipment, Shoup 690 



Implement sheds and granaries for prairie farms, Greig and Shaw 690 



Silos and root cellars for prairie farms, Greig and Shaw 690 



Silos and silage, Blanchard 690 



Houses for prairie farms, Greig and Beale 690 



Modem plumbing illustrated, Starbuck 690 



Sewage disposal for country homes, White and Hastings 691 



RURAL ECONOMICS. 



Labor requirements of crop production. Cooper, Peck, and Boss 691 



Waste land and wasted land on farms. Ball 692 



Size of farm business, Johnson and Foard 692 



The farmer's income, Goldenweiser 692 



The farmer's income, Goldenweiser 693 



Costs and sources of farm-mortgage loans in the United States. Thompson 693 



The bulk handling of grain for California, Crocheron and Williams 693 



Rules and regulations under the United States Cotton Futiires Act of 1916 693 



Agricultural associations and the war, Sagourin 693 



Rome's fall reconsidered, Simkho\dtch 694 



Monthly crop reports, July and August, 1916 694 



