42 Algae. — Fungi, Bacteria und Pathologie. 



2. From Ojika peninsula to the north. Dominated by 

 the arctic stream and similar to the eastern shores of 



YesSO. Moore. 



FERGLSON,iV\ARüARE T,C, A p r e ! i m i n a r y s t u d v o f t h e g e r m i n a- 

 tion of the spores of Agaricus campestris and o t h e r 

 Basidiom ycetous Fungi. (Bull. No. 1(>. Bureau of 

 Plant Industry, U. S. Department of Agriculture. 1902. 

 43 pp. 3. pl.) 



A study was inade of the germination of the spores of a large 

 number of Basidiomycetous fungi with reference to extremes of tempe- 

 rature, the action of artificial digestive fluids, the effects of acids and 

 alkalies, and the Variation due to age and to other factors and Stimuli. 



In case of Agaricus campestris it was determined, that if a few 

 spores were able to germinate under the cultural conditions, or if a bit 

 of the mycelium of Agaricus campestris be introduced into the culture. 

 the growth resulting in either case caused or made possible the germina- 

 tion of nearly all the spores of the culture, provided that the other con- 

 ditions were not such as to inhibit germination. The addition of the 

 mycelium of other fungi, except in one doubtful case, gave negative 

 results in the germination of the spores of this fungus, nor did the 

 growing mycelium of Agaricus campestris influence the germination of 

 Agaricus placomyces and Clavatia cyathiforme. 



A list of substances in 4000 to 5000 cultures, studied for the effect 

 on germination of Agaricus campestris is given, of which 20 gave posi- 

 tive or partially positive, results, and 36 gave negative results The 

 highest percentage of germination was possibly more irequently obtained 

 with cultures in a pure Lepiota decoction. Of the chemical Stimuli tested. 

 ammonium Compounds and lactic acid seem to be the most effective in 

 stimulating germination. 



Hypholoma appendiculatum and Copri/itis micaceus were most 

 easily cultivated, their spores germinating in any agar in which thev 

 were sown. Sporophores of the latter were grown, but not of the former. 



A Condensed historical review is made of the literature dealing with 

 the phenomena of germination as exhibited in the Basicliomycetes. This 

 is followed by bibliography of the same. Hedgcock. 



Matruchot , L., Application d ' u n caractere d'ordrc 



ethologique ä la Classification naturellle. (Comptes 



rendus de PAcademie des Sciences de Paris. 1. Decembre 



1902.) 



Le Piptocephalis Tieghemiana seme sur les Champignons les plus 

 divers n'a pu se developper que sur des Mucorace'es. Toutes les Muco- 

 race'es se sont montrees aptes ä lui servir d'höte. Ce reactif physio- 

 logique, donnant im resultat positif avec le Cunninghamella africana 

 Matr. a permis ä l'auteur de rattacher cette forme conidifere aux Muco- 

 racees. Paul Vuillemin. 



Olive, Edgar W., Monograph o f the Acrasieae. ( Proceedings 

 of the Boston Society of Natural History. XXX. 1902. 

 p. 451—513. pl. 5—8.) 



In the introduction is a summary of the developmental 

 history of the Myxomycetes, the Labyrinthuleae and the Acra- 

 sieae, in which the three groups are compared and points of 

 resemblance and of difference are noted. In characterizing the 

 Acrasieae emphasis is laid on the fact that the vegetative stage 



