METEOROLOGY— WATEE. 113 



The iodin number of olive oil and variations in this value in Tunitian oils, 

 K. .Makcii.le (.1///;. Chiiii. Aiiuli/t., 12 {lUDl), Xd. .',, pp. tSS-lf)l). — Atrordiiis; to 

 the author's investigatious, wide variations t)ccur in the iodin number of Tuni- 

 .lian olive oils. 



Glycerin in wine, 1). A. Lojodice (A'cr. ] it., 28 {li)Ul), Xo. 713, pp. 119- 

 1S5). — The author finds that the difference between the extract determined by 

 evaporation in a water bath at 100° C. and by drying in a vacuum represents 

 approximately the glycerin content of wine determined by direct methods. 



Agricultural laws, E. F. Ladd {XorlJi Dal-oia Hid. Hpcr. Bui. .'>, pp. 12). — 

 Tliis contains tlie text of the State laws relating to the sale of commercial feed- 

 ing stuffs and sto( k foods, formaldehyde. I'aris green, and commercial fertilizers. 



Food and drug laws, E. F. Ladu {\oiili Dakota Sta. l<!pcc. Bnl. G, pp. 20). — 

 This contains the State pure-food law and the pure-drug law as amended and 

 reenacted. tlie paint law, alistracts from other State laws dealing with the 

 adulteration of foods, dairy products, oils and paints, and rulings, interpreta- 

 tions, and suggestions for the guidance of interested parties. 



A milk colorimeter, A. Bernstein (Chciii. Zt;/., 31 (t!)07). No. .IS, p. 727, p(/. 

 1). — The apparatus descril:)ed is intended fov determining approximately the fat 

 content of sl<im milk. The sample to Ijo tested is coagulated with acetic acid 

 and the color or cloudiness of the fluid portion is compared with that of a stand- 

 ard solution which corresponds in appearance to whey having a fat content of 

 0.15 per cent. The apparatus consists of 2 glass tubes* with a blue glass rod in 

 the center of each and a white porcelain background. 



Apparatus for the determination of water and fat in butter, F. T. Shutt 

 {Canada Dcpt. Agr., Branch Bainj and Cold Storage Comr. Bui. 14, PP- 8, 

 flgn. 2). — This bulletin gives the results of tests of 2 pieces of apparatus now 

 on the market, one designed for determining the amount of fat in butter and 

 the other the water content. Fairly accurate fat determinations were made, 

 bnt the results with the hygrometer were rather luisatisfactory. 



METEOROLOGY— WATER. 



The importance of meteorological and weather forecasting for practical 

 farmers, F. Kruger (FiiJiling's Landir. Ztg.. .76' (1907), \o. 11, pp. 369-386, 

 fig'<. 3). — This is a discussion of this subject with a view to facilitating the use 

 of th(^ reports of the German weather service I)y practical farmers. 



Meteorology in the service of agriculture, J. IIudig {Cultura, 19 {1907), 

 No. 223, pp. 182-189). 



Variations of the meteorological elements of the soil, A. Baldit {Rev. 

 Aurergne, 23 {1906), No. -'/, pp. 269-271). — Observations with a thermometer, 

 barometer, and hygrometer biu'ied in the soil at a depth of 1.8 m. from June 

 23-30 are reported. The temperature registered by the buried thermometer 

 was 5° to 6° lower than that of the air thermometer. The barometric pressure 

 in the soil was about 3 mm. higher than that of the barometer in air. The 

 humidity was nuich higher in the soil than in t!ie air (35 m. above ground). 

 Tlie most important fact observed was that the atmospheric jiressure was trans- 

 mitted to the buried banmieter without appreciable lag or diminution of ampli- 

 tude. 



Results of nieteorological observations in Brunswick, 1878-1905, Dorr 

 (Beltr. Statl.s. Braunsclnrcig, 1907. No. 20, pp. 1-38. map 1). — Detailed sum- 

 maries are given. 



Meteorological observations by the Biological Agricultural Institute 

 of Amani, German East Africa, ^'. Trommel {I'flanzcr. 3 {1907), No. 5-6. pp. 



