BOTANY. 417 



Concerning sugar and starch formation in barley and malt, J. < iKi'ss | Wchnschr. 

 Bran., 15 (1898), No. 20, pp. 269-275, pi. 1). 



A microscopical study of barley during germination, J. Gruss ( Gaz. i rasseur, 

 1898, No. 550). 



Concerning the michrochemical de'ection of cane sugar in plant tissues, 

 C. HoffaIEISTER (Jahrb. Wiss. Hoi., 31 (189S), No. 4, pp. 688-699). 



On the formation of diastase by fungi, J. Katz (Jahrb. Wiss. Hot., SI (1SD8), 

 No. 4, pp. 599-618). 



Concerning plasmolysis and plasmotic membranes, R. Ciioi>at and A. M. Boo- 

 DIER (Jour. Bot. [France], 12 (1898), Xo. S, pp. 118-132, pi. I). 



Concerning the anatomy and physiology of the assimilatory tissues of 

 plants, L. Muxtemartini (Atti Inst. Bot. Univ. Paria, 4 (1898), pp. 89-128, pi. 7). 



The general anatomy and physiology of tissues, R. Hertwig (Allgemeine 

 Anatomic mid Physiologie der Geioebe. Jena: Gnstar Fischer. 1898, pp. VIII-{-314,fig8. 

 89). — This is the second volume of the series ou the general anatomy and physiology 

 of the cell and tissues. 



Microchemical investigations of the cell walls of some fungi (Jahrb. Wiss. Bot., 



31 (1898), Xo. 4, pp. 619-687, pis. 2). 



A key to the principal plant substances, R. H. True (Pharm. Rev., 16 (1898), 

 No. 1; abs. in F.oi. Centbl., 74 (1898), Xo. 8, p. 237). — The author gives a key to the 

 principal plant substances based on microchemical investigations. 



On the annual growth rings of trees, A. Wieler (Tharanil. Forst. Jahrb., 48 

 (1898), p. 101). 



Contractile roots and their activity, A. RimraCH (Beitr. Wiss. Bot., 2 (1S97), pt. 

 I, pp. 1-28, pis. 2; abs. in Bot. ('entbl.. 74 {1898), Xo. 7, pp. 209-211).— The author 

 reports 70 species representing 6 families of monocotyledonous and 14 of dicotyledon- 

 ous plants as having contractile roots. 



Concerning nuclear structure. F. Cavara (Atti Inst. Bot. Univ. Pavia, .'. ser., 5 

 (1898), pp. 49, pi. 2; abs. in Bot. Centbl., 74 (1898), Xo. 8, pp. f 239-241). 



Moisture, the plant's greatest requirement, J. C. ARTHUR (Amer. Florist, 13 

 (1S9S), Xo. 508, pp. 813, 814). — A paper read before the American Carnation Society. 



On the substitution of rubidium salts for potassium in some of the lower 

 fungi, O.Loew (Bot. Centbl. ,74 (1898), No. 7, pp. 202-205). — The author agrees with 

 Giinther that some of the lower fungi are able to utilize rubidium salts in place of 

 potash iu their uutritiou. 



On the influence of sulphur anhydrid on plants in the greenhouse, E. Laurent 

 and H. Gillot (Bui. Agr., 14 (1898), pt. 2). 



Concerning the growth of buds during winter, E. KtJSTER ( Beitr. Wiss. Bot., 2 

 (1S9S), Xo. 2, pp. 401-413, jigs. 2). 



On the development of structure of the flower buds of fruit trees and shrubs, 

 J. Behrens (Gartenjlora. 4? ( 1898), Xo. 10, pp. 200-274). 



Mushroom poisoning, G. Arcangeli (Atti 11. Acad. Econ. Agr. Georg. Firenze, L 

 ser., 21 (1S9S), Xo. I, pp. 65-87). 



A psychrometer applicable to the study of transpiration, R. G. Leavitt ( Amer. 

 Jour. Set., 5 (1S98), No. 30, pp. 440, 441). 



An osometer and root pressure apparatus, D. T. MaoDougal (Jour. Appl. 

 Micros., 1 (1898), Xo. 3, p. 56, fig. 1). 



The fecundation of the Lobeliaceae, Campanulaceae, and Compositae, II. 

 Dauthenay (Eev. Hort., 70 (1S9S), No. 17, pp. 404-408, figs. 5). 



A study of the roots of Sorghum saccharatum, .1. Zawodny (Ztschr. Naturw. 

 [Jena], 70 (1898), pp. 169-183; abs. in Bot. Centbl.. 75 ( 1898), Xo. .!. pp. 88, 



The cell wall of plants, E. Strasburgek (Jahrb. Wiss. Bot., Vo. 4, pp. 



511-598, pU. 2). 



Investigations on the structure of raphid cells, P. C. A. Fuchs I Oesterr. Bot. 

 Ztschr., 48 (1S98), No. 9, pp. 324-332, pi. 1). 



Concerning the knowledge of the starch grain, J. H. Salter (Jahrb. Wiss. Bot., 



32 (1898), No. l,pp. 117-100, pis. 2). 



