88 EXPEEIMENT STATION EECOKD. 



Tests of a centrifug'al cream, separator, R. Santelici (Staz. 8per. Agr. 

 Ital., 45 {1912), No. 8, pp. 615-622). — ^A description of tlie separator and a dis- 

 cussion of investigations and actual tests are given, including tabulated test 

 results. 



The investigations indicate that this machine occupies little space, is easily 

 installed and requires no special foundation, is easily cleaned, is constructed 

 of durable materal, has a relatively small first cost, and has a complete assort- 

 ment of repair parts which may be renewed at little cost. It effects a rigid 

 separation of a large quantity of milk with a relatively small power con- 

 sumption. 



The use of fuel in creameries, von Meekatz (Milchw. Zentbl., Ifl {1912), 

 No. 23, pp. 723-727). — For the purpose of comparing the economy and efficiency 

 in fuel consumption in dairies of different milk-handling capacity, tabulated 

 data are given from 2 years' operation of 108 creameries, varying in capacity 

 from 500,000 to 8,500,000 kg. of milk per year. The data show wherein the ap- 

 plication of up-to-date and scientific methods of management tend to promote 

 economy in fuel consumption. 



Ice cold storage on the farm, R. R. Gbaham {Ontario Dept. Agr. Bui. 207, 

 1912, pp. ^8, figs. 29). — A general discussion of the value of cold storage on the 

 farm, the properties and cooling power of ice, and the essentials of a good 

 ice house is followed by several designs with plans and bills of material of 

 make-shift and permanent ice houses, and combinations of ice houses and cold 

 storage systems. 



The basis of the designs is that cold storage involves means of controlling 

 not only the temperature but the humidity, purity, and circulation of the air 

 within the storage rooms and that a successful ice house should have a shady 

 and convenient site, adequate drainage, free air circulation over the ice, good 

 insulation, and sufficient banking to prevent warm air gaining access from be- 

 neath. Sawdust is considered the most efficient insulating material, although 

 hay or straw may be successfully used. It is suggested that at least 1 ft. of 

 insulating material be packed between the ice and the side walls, 2 ft. of insu- 

 lating material under the ice, and a considerable quantity on top. 



In addition suggestions are given on the use of refrigerators, the proper 

 storage of perishable products, and the proper harvesting of the ice crop. 



A bulletin dealing with mechanical cold storage is in preparation. 



Lightning protection of buildings, E. J. Bebg {Engin. News, 69 {1913), 

 No. 6, pp. 2J[0-242, figs. 2). — The author gives the results of his own and other 

 investigations of the action of lightning and of the efficiency and protective 

 value of lightning rods, and outlines methods of designing and erecting light- 

 ning rods to give the maximum of protection. 



The sanitary privy {N. C. Bd. Health Spec. Bui. 13, 1912, pp. 15, figs. 3).— 

 This bulletin points out the hygienic and sanitary value of the sanitary privy 

 and gives detailed directions for its construction and care, accompanied by 

 complete working plans and a bill of materials of a design considered to be 

 cheap and efficient. It is stated that the two essentials of sanitary privy con- 

 struction are that they shall be fly-proof and water-tight. A set of proposed 

 sanitary ordinances is also given. 



RTJEAX ECONOMICS. 



Agriculture, 1909 and 1910. — VT, Reports by States, with statistics for 

 counties .(Alabama-Montana) {Thirteenth Census U. S., 6 {1910), pp. 977, figs. 

 jJ5). — This volume constitutes a separate report of the Thirteenth Census on 

 agriculture, covering 25 States in alphabetical order from Alabama to Montana, 



