47° BOTANICAL GAZETTE [DECEMBER 
a succession of forest forms, the birch and pine entering soon as pioneers; there 
followed then in turn the oak, the spruce, and finally the beech. The second 
part opens with a treatment of Carpathian genera which show slight variation, 
or which on the other hand are strikingly variable; this study results in inter- 
esting deductions of evolutionary importance, There follow a consideration of 
— pheuumens, = = — = cultivated plants of the Carpa- 
thians, and esc of the thallophytes and bryophytes, 
which too ie are e-ignored 3 in such ‘treatises, The treatment of the thallo- 
phytes is brief, owing to inadequate knowledge of their distribution, but the 
account of the bryophytes is more satisfactory. The western Carpathians 
are richer in bryophytes than the eastern Carpathians, owing to the greater 
rainfall and humidity. The third and final part treats in detail the particular 
features of the different districts of the Carpathians—HENry C. CowLes. 
Plant anatomy 
A second edition of STEVENS’ Plant anatomy’ has appeared three years after 
_ the first edition, which was reviewed in this journal.6 That review stated fully 
the purpose and method of the book, so that only the notable new matter in - 
the second edition needs notice here. It consists of a chapter of 38 pages on 
reproduction, and has been made imperative by the recent rapid development 
of plant-breeding as a science, involving as it does the fundamental principles 
- of heredity. Professor STEVENS outlines first the mechanism of sporogenesis 
and of fertilization as now understood, and then presents in a clear and practical 
way the conclusions that have been reached by the application of MENDEL’Ss 
law. As said in the previous review, Professor STEVENS is an excellent teacher, 
and therefore, by text and apt illustrations, he has made an obscure region as 
luminous as it can be made for an elementary student. 
As an elementary text on physiological anatomy, in which tissues and their 
functions are interwoven in their presentation, this volume is unique. It is 
not the new vascular anatomy, with its phylogenetic motive; or the old anat- 
omy, with its deadness of detail; but the old agi ”? animated by physi- 
ology and ecology rather than by evolution.—J. M 
MINOR NOTICES 
Das Pflanzenreich.—Part 417 consists of a monograph of the Garryaceae, 
Nyssaceae, Alangiaceae, and Cornaceae by Dr. WALTER WANGERIN. In 
5 STEVE s, Wi11aMJCuase, Plant anatomy, from the standpoint of the develop- 
ment and PEI! of the tissues, and handbook of micro-technic. Second edition. 
pp. pPalls jigs. 152. Philadelphia: P. Blakiston’s Son & Co. 1910. $2. 
T. GAZETTE 46:306. 1908. 
7 Fee A. ee eps arnatetng Heft 41 (IV. 562; 220,>; 229). Garryaceae, 
Nyssaceae, Alangiaceae, Cornaceae, von WALTER WANGERIN. = 17, 19, 24, 110. 
ast 5 (26), 6 (47), 4 (38), 24 (193). Heft ~ _ 147). Euphorbiaceae-Jatropheae, 
. Pax. pp. 148. figs. 45 (155). Leipzig: Wilhelm Engelmann. 1910. M 9.20; 
M3 7.40. 
