ARTICLES IN JOURNALS. 29 



grasses and herbage, or a beech wood with the " red beech and all 

 the species which usually accompany it." The members of such 

 societies must bear the same relation to their environment, or 

 must be closely interdependent — there must be a sort of symbiosis 

 or syntrophy. 



Having stated his case, the author treats his subject in seven 

 sections. In the first (pp. 12-93) he discusses "the oecological 

 factors and their operation." The composition of the air, light, 

 temperature, mist, rain, wind, the physical and chemical properties 

 of the soil, and the like, are taken in order. Section 2 (pp. 94-120) 

 deals with symbiosis in general, and plant-societies in particular ; 

 while in the next four sections (pp. 120-350) the different societies 

 are treated under four heads — Hydrophytes, Xerophytes, Halo- 

 phytes, and Mesophytes. The first three groups are sufficiently 

 defined by their names ; Mesophytes are by contrast adapted to soil 

 and air containing a moderate amount of moisture, and to soil 

 which is not remarkable for the amount of salt, that is to say, this 

 class comprises ordinary vegetation. The last section (pp. 350- 

 382) is entitled "the struggle between the plant-societies," and 

 the closing chapter is on the origin of species. The whole concludes 

 with a bibliography and a copious index. 



A. B. Eendle. 



ARTICLES ly JOURNALS.- 



Annals of Botany (Dec). — D. H. Campbell, ' Development of 

 Geothallus ' (2 pL). — A. J. Pieters, ' Influence of fruit-bearing on 

 development of mechanical tissue.' — H. M. Richards, ' Respiration 

 of wounded plants.' — F. A. F. C. Went, 'Notes on Sugar-cane 

 diseases' (1 pi.). — W. C. Worsdell, 'Anatomy of stems of Macro- 

 zamia compared with other genera of CycadecB' (2 pi.). — 'Report of 

 discussion on ascent of water in trees.' 



Bot. CentraJblatt (Nos. 48-51). — H. Rothdanscher, ' Ueber die 

 anatomischen Verhaltnisse von Blatt und Axe der Phyllantheen ' 

 (concl.). — W. Futterer, ' Zur Anatomic und Entwicklungsgeschichte 

 der Ziii;/iberace(B' (1 tab.). — (No. 50). W. Johannsen, 'Aether- 

 und Chloroform-Narkose und deren Nachwirkung.' 



Botanical Gazette (Nov. 23). — B. M. Davis, ' Development of 

 procarp and cystocarp in Ptilota' (2 pi.). — E. A. Burt, 'Systematic 

 account of the PhaUoidecc of United States.' — N. M. Glatfelter, 

 ^ Salix cordata X sericea.' — T. Holm, ' Amphicarpwn' [1 pli). — 

 L. M. Underwood, ' Ferns of Alabama ' (1 pi.). 



Bot. Notiser (haft 6). — P. Dusen, ' Den eldsliinska ogruppens 

 vegetation.' — L. M. Neuman, ' Studier ofver Skunes och Hallands 

 Flora ' (cont.). 



* The dates assigned to the numbers are those which appear on their covers 

 or title-pages, but it must not always be inferred that this is the actual date of 

 publication. 



