METEOEOLOGY WATER. 507 



is not sufficiently great tlaat tlieir use could be condemned. Lead arsenate does 

 not affect the strengtli of tlie wash quite so mucli as calcium arsenite, but it is 

 much more expensive, and a choice between the two will depend upon which 

 will be the safer to apply to foliage." 



The utilization of crop plants in paper making', C. J. Bkand ( U. 8. Dept, 

 Agr. Ycuibook 1910, pp. 329-S.'fO, figs. 3). — This is a discussion and report of 

 work carried on with cornstallvs, broom corn, hemp stalks, saccharin and non- 

 saccharin sorghum stalks, cotton stalks, iiax and rice straw, bagasse, tules, 

 hemp wastes, cotton hull fiber, Epicampcs macroura (a southwestern grass, 

 the tops of which are a by-product from the root-brush industry), Arundo, 

 Arundinaria, Eulalia, and several other plants with regard to the i)ossibility of 

 utilizing them as a source of raw material for paper making. 



As the result of tests and observations, the author believes that " a point may 

 soon be reached where crop by-products can be made into pulp and paper at 

 a profit to both the farmer and the manufacturer. There does not seem to be 

 any reasonable hope at the present time of producing paper stock from crop 

 wastes that will be cheap enough to use for printing newspapers. This is due 

 chiefly to two causes — the low cost at which such i)aper can be produced from 

 ground wood and the striking adaptability of ground wood pulp to the news- 

 paper printing industry. . . . Wood will probably be used for making news 

 paper long after other materials have accpiired imiK)rtance in many bi-anches 

 of the chemical pulp industry. . . . While the conservation of only a few of 

 the by-products of the farms yielding paper fiber can be accomplished profitably 

 in the near future and only a few plants promise to be money-makers imme- 

 diately if grown solely for paper production, it seems very probable that raw 

 products now scarcely considered may in a few years i)lay an important part 

 in the i)aiier and i)u]p industry." 



Manufacture of potato spirit in Germany, R. P. Skinner (Daily <'ons. and 

 Trade 7?p/.s. [U. »s'.], 13 (1910), No. 1J,S, pp. // 67- 7 i 6.9). —After discussing the 

 classification and the derivation of alcohol, the author details the processes for 

 jjreparing alcohol from potatoes, as practiced in Germany. Statistics in regard 

 to prices and production are included. 



Yearbook of chemistry, edited by R. Meyer et al. (Jahrb. Chem., 19 (1909), 

 pp. Xll+aOl). — This is a reiiort of the more important progress made in the 

 field of pure and applied chemistry for the year 1909. 



Proceedings of the twenty-seventh annual convention of the Association 

 of Official Agricultural Chemists, edited by H. W. Wiley ( JJ. 8. Dept. Agr., 

 Bur. Cheiii. Bui. 137, pp. 211, figs. 3). — This is the official report of the pro- 

 ceedings of the convention held at Washington, D. C, November 10-12, 1910. 

 A summarized account of the meeting has been already noted (E. S. R.. 24, 

 p. 196). 



METEOROLOGY— WATER. 



[The organization of agricultural meteorology], L. Dop (Rapport Presente 

 au Comity Permanent sur la Question N. 6 dii Programme de VAssembUe 

 G&nerale de 1911 Coneeniant la Met^orologie Agricole. Rome: Inst. Intemat. 

 Agr., 1911. pp. 61). — This is a report to the International Institute of Agri- 

 culture setting forth the importance of organizing systematic international 

 observations in agricultural meteorology and proposing a plan for such organi- 

 zation. 



Handbook of climatology, .7. IIann (llandbuefi, der KUmatologie. 8tuttgart, 

 1911, vol. 3, pt. 2, 3, rev. and enl. ed., pp. IX+713, figs. 12).— This is a third 

 enlarged and revised edition. 

 9204°— No. 6—11 2 



