232 Fungi, Bacteria und Pathologie. 



Morgan, A. P., Dictyostelieae o r Acrasieae. (Journal of 



Mycology. IX. May 1903. p. 84—86.) 



This is a critical review of the monograph on the Acrasieae by 

 Edgar W. Olive of the Cryptogamic Laboratory of Harvard University. 

 A number of valuable suggestions are made concerning the position of 

 this group in the vegetable kingdom. It is suggested that since Dictyo- 

 stelium is the principal genus of this group this name should have been 

 selected from this genus. G. G. Hedgcock. 



MuRRiLL, William Alphonso, A Historical Review of the 



Genera of the Polyporaceae. (Journal of Mycology. IX. 



May 1903. p. 87—102.) 



In this article the author follows the principies of „generic types" 

 as stated and explained by Underwood in „A Review of the Genera 

 of Ferns proposed prior to 1832" (Mem. Torrey Club, VI, p. 250), and 

 restated by Banlser in „A Historical Review of the proposed Genera 

 of the Hyclnaceae which appeared in the Torrey Bulletin in July 1903. 

 After making a brief Statement regarding the establishment of each genus 

 in its chronological order, an alphabetical summary is made in which the 

 available generic names are distinguished from those which for any 

 reason are considered untenable. Of 112 genera which have been 

 established since the beginning 40 are recognized by the author. 



G. G. Hedgcock. 



Phisalix, C, Le jaune d'oeuf comme milieu de culture 



du microbe de la tuberculose; \ariabi!ite du 



bacille de Koch. (Compt. Rend. Soc. de Biol. T. LV. 



1903. p. 604—605.) 



L'auteur signale l'emploi du jaune d'oeuf incorpore ä une puree de 

 pommes de terre legerement glycerinee pour la culture du bacille de la 

 tuberculose; le tout est sterilisee ä i'autoclave. En passant de la pomme 

 de terre sur le milieu au jaune d'oeuf, le bacille humain s'est modifie et 

 a pris les caracteres du bacille aviaire. M. Radais. 



Ravaz, L. e t SiCARD, L., Sur la brunissure de la Vigne, 



(Comptes rendus des seances de l'Academie des sciences de 



Paris. 25 mai 1903. p. 1276—1278.) 



La brunissure est consideree connue l'effet de l'epuisement des 

 pieds de Vigne par une fructification exageree. Des dosages de- 

 montrent, pour l'ensemble de la souche, un deficit de 45 p. 100 pour la 

 potasse, de 23 p. 100 pour l'acide phosphorique, de 11 p. 100 pour l'azote. 

 La chaux et la magnesie sont en exces dans les organes des Vignes 

 malades. Les grappes supplementaires, quoiqu'appauvries dans leur 

 composition centesimale, contiennent non seulement tout Tazote, l'acide 

 phosphorique, la potasse qui fönt defaut dans les divers organes, mais 

 en outre, un excedent considerable qui n'a pu etre emprunte qu'au sol. 



Paul Vuillemin. 



Seymour, A. B., A Series of specimens illustrating 



North American Ustilagineae. (Journal of Mycology. 



IX. May 1903. p. 83—84.)' 



All botanists are invited to contribute additional material to 

 Supplements to the series of specimens entitled Economic Fungi of which 

 a preliminary account is given in the Journal of Mycology for October 

 1902. G. G. Hedgcock. 



