BOTANY. 1013 



duction is to be continued. The general purpose and methods of plant introduction 

 have been set forth in Bulletin 21 of the Division of Forestry (E. S. E., 10, p. 927). 



Meadows on moor soils of the royal forest domain Zehdenick, L. WlTTMACK 

 (Landw. Jahrb., 27 (1898), No. 3-4, pp. 277-334).— Fertilizer and culture tests were 

 made and the growth of the different grasses and other meadow plants observed. 

 The results obtained in 1896 and 1897 are given in tables and discussed. Different 

 species of grasses are brieily noted. 



Saltbush, J. Vilbouchevitch (Ann. Sci. Agron., 1898, II, No. 2, pp. 268-271).— 

 A note on Atriplex semibaccatum. 



Concerning the genus Phyllactinia, E. Paixa (Ber. Dent. Bot. (resell., 17 (1S99), 

 No. 2, pp. 64-72, pi. 1).— Phyllactinia berberidis n. sp. is described and studies are 

 reported upon the haustoria of the genus. 



Influence of light on the development of some fungi, F. Graenitz (Inaug. Diss., 

 Leipsic, 1S98, pp. 74 ; abs. in Bot. Ztg., 2. Alt., 57 (1899), No. 7, pp. 97-99).— Studies are 

 reported on Pilobus microsporia and Coprinus slercorarius. 



Influence of light upon the respiration of the lower fungi, R. Kolkwitz (Jahrb. 

 Wiss. Bot, 33 (1S99), No. 1, pp. 128-165, pis. 2).— The effect of light upon molds and 

 bacteria was investigated. 



Specific characters of Endomyces albicans, P. Vuillemin (Compt. Rend. Acad. 

 Sci. Paris, 127 (1S9S), No. 17, pp. 630-633). — The author claims the discovery of 

 ascospores in this fungus and groups uuder the above name all the forms of O'idium 

 albicans, etc. 



Contributions to the biology of pollen, B. Lidforss (Jahrb. Wiss. Bot., 33 (1899), 

 No. 2, pp. 232-312). 



On the absorption of halogen salts of potassium by plants, E. Demoussy 

 (Compt. Bend. Acad. Sci. Paris, 127 (1898), No. 20, pp. 771-774). — The author shows that 

 colza is able to absorb through its roots considerable chlorin and bromin from the 

 potassium salts containing them. A marked difference is noted between those plants 

 which are able to absorb iodin and those not so constructed. 



On contact irritability, A. J. Ewart (Ann. Jard. Bot. Buitenzorg., 15 (1898), No. 1, 

 pp. 1S1 -242, pis. 2, figs. 5). 



A contribution to the knowledge of the anatomy and physiology of water- 

 secreting organs (Beilrdge zur anatomischen tind physiologischen Kenntniss Wasser 

 secernirender Organe. Stuttgart: M. von Minden, 1899, j;|). 76, })ls. 7). 



On the growth of root hairs and rhizoids, C. Sokolowa (Bui. Soc. Imp. Nat. 

 Moscow, 1897, pp. 167-277, figs. 3; abs. in Bot. Centbl., 77 (1S99), No. 8, pp. 274-276). 



Experiments with Alinit, J. Stoklasa (Dent. Landw. Presse, 26 (1899), No. 2, 

 p. 13). — The author defends his position relative to the efficiency of Alinit in aiding 

 cereals to acquire free atmospheric nitrogen. The source through which the bac- 

 teria are said to act are the carbohydrates in the soil, the proteid material in the 

 bacteria readily uniting with the carbohydrates and becoming available to the plant. 



Field experiments with Nitragin, O. Burchard (Landw. Wchnbl. Srhlcswig- 

 Holstein, 49 (1899), No. 12, pp. 200, 201).— Reports the advantageous employment of 

 Nitragin both as a soil and seed inoculating material for Vicia sativa dura when 

 grown with oats. Gains from 25 to 124 per cent are reported. 



Light a factor in sugar production, H. A. Weber (Jour. Amer. Chem. Soc, 21 

 (1899), No. 1, pp. 53-59).— Data collected from the history of beet and sorghum cul- 

 ture in the United States are reported to show that the sugar content of the plant 

 is dependent upon the amount of direct sunlight received, and hence that this factor 

 should be taken into consideration in determining the climatic conditions most 

 favorable for beet growing. 



Influence of the mode of nutrition on the evolution of plants, P. A. Dangeard 

 (Botaniste, 6. ser., 1S9S, No. 1, pp. 1-63).— The origin of the differentiation between 

 animals and plants is said to be a difference in the mode of nutrition. 



Crossbreeding wheat, L. Broekema (Orgaan Ver. Oudlecr. liijks. Landbouwschool, 

 11 (1899), No. 128, pp. 34-37, pis. 3).—k description of the methods and results of 

 crossing several varieties of Dutch wheat with square-head wheat. 



