526 EXPEKIMENT STATION RECORD. 



made with acid hide powder and the same neutralized with Hodium carhonate. The 

 results show close concordance, Imt the neutralized powder lost in ahsorptive power 

 while the filtrate was turhid and contained tannin. 



The volumetric determination of zinc, P. H. Walker {Jour. Amer. Chem. Soc, 

 23 {Jf)01), Xo. /', pj). 46S-470). — From the application of Stolba's method, modified 

 by Handy, tlie author obtained fairly fjood results with zinc in the presence of iron, 

 calcium, and magnesium. Manganese must be previously separated. 



Classification of acid, and alkali indicators, J. Wagner {Ztschr. Anorgan. Chem., 

 27 {1901), pp. 138-151; abs. in Jour. Chem. Soc. ILondori], 80 {1901), No. 464, II, pp. 

 419, 4-20). 



Miscellaneous analyses, C. H. Joxes and B. O. AVhite ( Vermont Sta. Rj)t. 1900, 

 jjp. 386-300). — Analyses are reported of 3 samples of nitrate of soda, 1 of dried blood, 1 

 of cotton-seed meal, 2 of tankage, 1 of ground fish scrap, 1 of ground bone, 8 of acid 

 phosphate, 4 of muriate of potash, 3 of sulphate of potash, 7 of wood ashes, 3 of mixed 

 fertilizers, 3 of muck, 1 of marl, 14 of feeding stuffs, and 2 of oleomargarine. 



Exhibit of the Bureau of Chemistry at the Pan-American Exposition, Buf- 

 falo, New York, 1901, H. W. Wiley, E. PI Ewell, W. D. Bigelow^ and L. W\ Page 

 ( U. S. Dept. Agr., Bureau of Chemistry Bid. 63, pp. 29, ph. 4)- — A detailed description 

 of the exhibit of the Bureau of Chemistry relating to pure and adulterated foods, the 

 beet-sugar industry, and the testing of road-making materials. 



BOTANY. 



The brome grasses of Wyoming-, A. Nelsox ( Wyoming Sfa. Bui. 46, pp. 21, ph. 

 3, figs. 9). — A discussion is given of the forage problems of Wyoming and suggestions 

 for the improvement of the ranges. In this State grasses suitable both for pasture 

 and hay are desirable, but there are comparatively few adapted to this double pur- 

 pose. Among the most valuable are the brome grasses of which quite a number are 

 native to the region covered by the bulletin. Following tlie discussion of the forage 

 problems, the author figures and describes a number of the more promising species 

 of brome grass. 



AgTOstological notes, F. Lamson-Scribxer and E. D. Merrill ( IJ. S. Dept. 

 Agr., Dirision of Agrostology Circ. 35, pp. 6). — Descriptions and critical notes are 

 given on some species of grasses, published in 1866 by Buckley; notes on the genus 

 Calamovilfa; descriptions of 3 new species of Panicum; a new species of Poa; and 

 some changes in nomenclature. 



The comparative anatomy of the foliar organs of Acacia, P. Ledoux 

 {Compt. Rend. Acad. Sci. Paris, 132 {1901), No. 11, pp. 722-725).— The author 

 reports having examined the leaves, enlarged petioles, and other foliar organs of a 

 number of species of Acacia, in which he found that the flattened petioles, by their 

 persistence, richness in chlorophyll, and numerous stomata are able to perform the 

 ordinary physiological functions of leaves, and at the same time are better adapted 

 to the intense sunlight of tropical regions. These petioles have a thickened epider- 

 mis, an abundant sclerenchyma, and a well-developed water conductive tissue, but 

 the thick epidermis prevents too rapid transpiration and the al)undant water-con- 

 ductive tissue supplies the plant with the greatest amount of water possible. 



On the relation between the structure of the sugar-beet root and its sugar 

 content, L. Geschwixd {Rev. Gen. Chim. AppL, 3 {1900), No. 12; rev. in Bui. Assoc. 

 Chim. Sucr. et Distill., 18 {1901), No. 10, pp. 785-795, figs. 5<S).— The author claims 

 in general that there is a relationship between the development of the woody struc- 

 ture of the root of the sugar beet and its sugar content. Usually a high sugar con- 

 tent is associated with a small development of the woody tissue. This conclusion, 



