Bd. XCIX. No. 11. XXVI. Jahrga n^r. 



Botanisches Centralblatt. 



Referirendes Organ 



der 



Association Internationale des Botanistes 



für das Gesammtgebiet der Botanik. 



Herausgegeben unter der Leitung 

 des Präsidenten : des Vice-Präsidenten : des Secretärs : 



Prof. Dr. R. v. Wettstein. Prof. Dr. Ch. Flahault. Dr. J. P. Lotsy, 



und des Redactions-Commissions-Mitglieds : 



Prof. Dr. Wm. Trelease. 



von zahlreichen Specialredacteuren in den verschiedenen Ländern. 

 Dr. J. P. Lotsy, Chefredacteur. 



No. 37. 



Abonnement für das halbe Jahr 14 Mark 



durch alle Buchhandlungen und Postanstalten. 



1905. 



Alle für die Redaction bestimmten Sendungen sind zu richten an Herrn 

 Dr. J. P. LOTSY, Chefredacteur, Leiden (Holland), Rijn-en Schiekade 113. 



Chamberlain, Charles J., Alternation of generations in 

 Animals from a botanical standpoint. (Botanical 

 Gazette. XXXIX. p. 137—144. February 1905.) 



In Short the theory is this; the egg with the three polar 

 bodies is a generation comparable with the female gameto- 

 phyte in plants; similarly the primary sporophyte with the four 

 spermatozoa constitute a generation comparable with the male 

 gametophyte in plants. All other cells of the animal compa- 

 rable with the sporpphytic generation in plants, the fertilized 

 egg being the first cell of this series. E. C. Jeffrey. 



Jeffrey, E. C. and Chas. J. CHAiUBERLAiN, Celloidin Techni- 

 que. A Reply. (Botanical Gazette. XXXVIII. 1904. 

 p. 381—382.) 



These two notes discuss Plowman's paper „The Cel- 

 loidin Method with hard Tissues" (see review in Bot. Centralbl. 

 Vol. XCVI. 1904. p. 337.), Jeffrey maintaining that the 

 method contains many features of greater or less novelty, and 

 Chamberlain claiming that it is merely a usable description 

 of the celloidin method, with the perfecting of the application 

 of fluoric acid as a useful improvement. 



Charles J. Chamberlain (Chicago). 



Ramaley, Francis, Anatomy of Cotyledons. (Botanical Ga- 

 zette. XXXVII. 1904. p. 388—389.) 



A study of ihe Ranunculaceae and Crucl/erae shows that there 

 is not so great a difference in structure between cotyledons 



Botan. Centralbl. Bd. XCIX. 1905. 17 



