272 UNCLASSIFIED PUBLICATIONS '[Box. Absts., Vol. IX, No. 3, October, 1921] 



and are to study the biology and geographical distribution, of the useful animals, the marine 

 plants, and the plankton. — T. C. Frye. 



1675. Barnard, J. E. Microscopy with ultra-violet light. Sci. Amer. Monthly 3: 219- 

 220. 5 fig. 1921. [Reproduced from Nature 106: 378-381. 1920 (see Bot. Absts. 8, Entry 

 2255).] 



1676. Bey, Charles Audebeau. Utilization des tiges de diverses plantes annuelles en 

 vue de la production de I'energie mecanique necessaire aux travauax agricoles de la valiee du 

 Niger. [The utilization of the stems of annual plants for the production of mechanical energy 

 necessary to the agricultural activities in the valley of the Niger.] Compt. Rend. Acad. Sci. 

 Paris 172: 764-766. 1921. — The combustion of plant products as a source of energy is consid- 

 ered. It is found that waste parts of cotton and other crops can be used in this way. — C H. 

 Farr. 



1677. Brown, W. H. Wild food plants of the Philippines. Bur. Forest. Philippine Islands 

 Bull. 21. 165 p., 81 pi. 1920. — The species are arranged in botanical sequence under families 

 and genera. It is the most comprehensive work of its kind so far issued in relation to the 

 Philippine flora. — E. D. Merrill. 



1678. Crevost, C, et C. Lemarie. Plantes et produits Slmenteux et textiles de I'lndo- 

 chine. [Plant fiber and textile products of Indochina.] Bull. Econ. Indochine 23: 209-231, 

 406-433. 1920. — A continuation of the series (see Bot. Absts. 6, Entry 1539) covering the palms, 

 bamboos, Cyperaceae, Pandanus, and miscellaneous vines of various families. — E. D. Merrill. 



1679. JtTRiTZ, Chas. F. Raw materials for industrial alcohol production. South African 

 Jour. Indust. 4: 167-173. 1921. 



1680. Nichols, George E. [Rev. of: Hedrick, U. P. Sturtevant's notes on edible 

 plants. Rept. New York Agric. Exp. Sta. (Geneva) IQIQ^; 17-686. 1920 (see Bot. Absts. 

 8, Entry 862).] Torreya 21: 50-52. 1921. 



1681. Von Blon, J. L. California's seaweed industry. Sci. Amer. 123: 445,458. Sfig. 

 1920. — The article concerns itself with the manufacture and uses of agar-agar. — Chas. H. 

 Otis. 



1682. West, A. P., and W. H. Brown. Philippine resins, gums, seed oils, and essential 

 oils. Bur. Forest. Philippine Islands Bull. 20. 230 p., 73 pi. 1920. — The authors present a 

 comprehensive treatise, from both a botanical and a chemical standpoint. Most of the species 

 considered are illustrated. — E. D. Merrill. 



1683. Williams, S. G, Manila hemp. Sci. Amer. Monthly 3: 255-257. 8 fig. 1921.— 

 A brief account is given of primitive methods of obtaining fiber from the banana plant abacd 

 (Musn textilis), as practiced in the Philippines. — Chas. H. Otis. 



