VI CONTENTS. [Vol. 35 



DAIRY FARMING — DAIRYING. 



Page. 



Factors influencing the development of dairy heifers, Eckles and Reed 871 



Feeding cotton-seed meal and nulls to dairy cows, Moore 871 



Cotton-seed meal versus cold pressed cotton-seed cake for dairy cows, Moore 872 



Feeding value of purchased feeds versus soiling crops, Moore 872 



[Dairy husbandry], Scott 872 



Does it pay to take extra care of cows? Hayden 873 



Law regulating weighing, testing, and purchasing of milk and cream, Carson 873 



Cream testing balances, Hunziker, Spitzer, and Ogle 873 



Cooling cream on the farm, Hunziker, Mills, and Switzer 874 



Progressive oxidation of cold-storage butter, Dyer 875 



VETERINARY MEDICINE. 



Livestock disease investigations, Barber 877 



[Report of the veterinary department], Connaway and Durant 878 



Text-book of meat hygiene, Edelmann 879 



The physical chemistry of disinfection, I, Norton and Hsu 879 



The early determination of pregnancy in domestic animals, Wecke 879 



The variations in reaction of the blood of different species, Cumming 880 



A practical method for the identification of guinea pigs, Kitchens 880 



Anticoagulant action of acid anilin dyes toward albumiaous materials, Hollande 880 



A method of studying the effect of serum upon tissues, Feldstein 881 



Effect of lecithin and horse serum on hemolytic action of peptones, Epstein 881 



The relation of lipoids to immune reactions, Jobling 881 



A new method of active immunization, Frakenhuis 881 



A simplified method of producing a potent precipitin serum. Smith. 881 



Serum osmose. The treatment of wounds by blood serum, Chatelain 882 



The specific serum treatment of wounds, Leclainche and Vallee 882 



The destruction of anthrax spores Ln hides and skins by caustic soda, Hader 882 



Experimental studies on the immunity of foot-and-mouth disease, Terni 882 



Tuberculosis of the seminal vesicles, vas deferens, and urethra, Chauss^ 882 



Influence of tuberculosis on the chemical composition of the body, Droge 883 



Studies in immunity to tuberculosis, Krause 883 



The antigenic properties of tubercle wax, Lucke 883 



Present status of the infectious abortion problem, Himmelberger 884 



Present status of the infectious abortion problem, Himmelberger 884 



Experiments with bacterial vaccines for splenetic tick fever, Rhea and Mackie . . 884 



Action of organic body fluids on the bacdlus of swine erysipelas, Colomo 884 



Report on the present state of knowledge of swine fever, Greenwood, jr 884 



Results of the use of hig-cholera globulin on 3,000 hogs, Graham 884 



Hog cholera in Pennsylvania, Staley 885 



The maintenance of virulence of Bacillus abortivus equinus, Good and Smith . . 885 



Contagious epithelioma in chickens. Mack and Records 885 



RURAL ENGINEERING. 



Proceedings of the Twenty-first International Irrigation Congress, 1914 885 



Report on the Ministry of Public Works, 1914-15 886 



The flow of water over sharp-edged notches and weirs, Gourley and Crimp .... 886 



Abnormal coeflicients of the Venturi meter, Gibson 886 



Pumps for the irrigation of small areas. Dibble 887 



Experiments on the purification of sewage and water, Clark and Adams 887 



Sewage disposal for isolated residences, Gillespie 887 



Sanitation in the mountains, Gillespie 887 



Engineering operations for the prevention of malaria, Evans 887 



Terracing in Texas, Olsen 887 



The use of dynamite in clearing land, Secrest 887 



Tars, pitches, bitumens, and asphalts used for road purposes, Robertson 888 



Motor truck lessens cost of maintaining gravel roads in Alabama, Edwards. . . . 888 



Public road mileage and revenues in the Middle Atlantic States, 1914 888 



New tests of bolted joints in timber framing, Dewell 888 



Lagscrewed joints in timber, Dewell 889 



Rules for conducting performance tests of power plant apparatus 889 



Directory and specifications of gasoline and oil farm tractors 890 



A standard drawbar rating for tractors, Olney 890 



