METEOROLOGY WATER. 918 



solution. This iiietliod eliiuiii.itcs I he tiiiinin and coloring matters which hiter- 

 fere with the color reaction wlicu ctiicr alone is used as a solvent. 



Mineral acids in vinegar, F. D. Ratcliff (Aiiiili/tit, 32 {1901), .A'o. .?7 ?, [ip. 

 82-8Jf). — The author reports a comparison of methods for detecting mineral 

 acids in vinegar and jioints out that results may he too high or too low, 

 according to the method followed. In his judgment, commercial vinegar is 

 no longer adulterated with mineral acids, so that the elaboration of methods 

 for their detection is not necessary. 



Progress made during 1906 in the examination of foods and condiments, 

 Utz (Osierr. Choii. Ztg., JO {1901), No. 6, pp. 12-19). — ^The data summarized 

 have to do with the examination of water, milk, wine, fats and oils, flour, 

 meat and meat goods. i)reservatives, condiments, etc 



Miscellaneous chemical analyses made in 1903, 1904, and 1905, A. M. 

 Peter et al. {Kentucki/ Hta. Rpts. 1903, l)p. 265-311; 1904, pp. 113-194; 190.5. 

 pp. 225-236). — These threc^ r(>])orts contain analyses of B5 samples of sorghum, 

 48 of sugar beets, 15 of soil. 1 of marl. '> of oats, 2' of horse weed {Ambrosia 

 triflda), 1 of alfalfa, 1 of red clover, o of corn stover, 11 of commercial feed- 

 ing stuffs, 1!) of tobacco. 1 of distillery slop, 1 of corn, 8 of butter. 1 of wood 

 ashes, 1 of sal Bordeaux, 3 of petroleum, 3 of forage plants, and 109 of mineral 

 waters. 



Examination of papers, F. P. Veitch {TJ. S. Dept. Agr., Bur. Chem. Circ. 

 3-'/, pp. 10). — This circular gives the "methods and tests by which the composi- 

 tion and value of paper are judged, examples illustrative of the nature and inter- 

 I)retation of results, and brief outlines of the characteristics which the more 

 important classes of i>a]ier should i)Ossess." 



METEOROLOGY— WATER. 



Climate of Virginia, (J. T. Surface {BuL Anier. Gcof/r. Hoc. 39 (1901). 

 No. 2, pp. 92-98). — Data for mean annual temperature, rainfall and snowfall, 

 and length of growing season at 10 representative stations in Virginia from 1900 

 to 1905 are tabulated, and the climatic conditions of the different physical 

 divisions of the State are discussed. It is shown that the climatic belts are in 

 general coincident with the physical divisions of the State, namely, Tidewater, 

 Middle Virginia, Piedmont, Blue Ridge, Valley, and Appalachia. 



The mean annual temjjerature of Tidewater is 58 to ()1° F.. the rainfall 

 35 to 45 in., and the average growing season 7 to TJ months. The mean annual 

 temperature of the extreme southern Tidewater i*egion is about 00°, and in this 

 belt cotton is grown to a limited extent. The soil of the region is universally 

 sandy or a sandy loam, which with adequate rainfall and a warm temperature 

 is well adapted to truck farming. 



The average mean annual tcmi)erature of the Middle and I'iedmont regions 

 is 56 to 58°. The growing season is 2 to 3 weeks shorter than in Tidewater. 

 This region is especially adapted to tobacco culture. 



The Blue Ridge, Valley, and Appalachia regions constitute the mountain 

 district of the State. The mean annual temperature of Blue Ridge and the 

 Valley is 51' to 56°, and of Appalachia 48 to 54°. The area covered by 

 these regions is especially suited to grasses, grains, and apples. The length of 

 the growing season is 5A to 6 months in lilue Ridge and the Valley, and about 

 2 weeks less in Appalachia. This region, together with a part of Piedmont 

 adjacent to Blue Ridge, is peculiarly adapted to apple culture. 



The rainfall throughout the State is, as a rule, abundant and well distributed. 

 "There Is a wide variation in the snowfall of the State, both regionally and 



