151 Stoöaufnahme. 563 



Les fornies conidiennes de la truffe prennent naissance directement sur 

 ce filament; 011 apercoit ainsi tres bien l'insertion des filaments dresses et 

 cloisonnes de 1' Acrostalagmus cinnabarinus sur le mycelium truffier non 

 cloisonne. 



111. Gennination de la spore echinulee de la Truffe. 



Germination de la spore echinulee dans l'asque. 



29. Greig-Smith, R. The probable identity of the Opsonins with 

 the normal agglutinins. (Proc. Linn. Soc. N. S. Wales, XXX [1905], 

 p, 555 — 569.) 



Verf. gibt folgendes Resümee : 



„The investigation has shown that the Opsonins and agglutinins are 

 probably identical, inasmuch as they have many points of similarity, and pro- 

 bably no points of difference. The similarities arc as follows: 



1. Staphylococcus Opsonin and agglutinin are not destroyed at 60°; their 

 powers are only temporarily in abeyance. Contact with the bacteria 

 for 20 hours induces a l'ecovery. 



2. In dilute saline Solutions the recovery of the opsonic power is accom- 

 panied by a agglutination of the bacteria. 



3. Potassium chloride gives a greater agglutinative and a greater opsonic 

 effect than sodium chloride. 



4. Dilution of the serum with saline Solutions increases the agglutinative 

 and the relative opsonic effects. 



5. Longer cultivation of a weak race of Staphylococcus increases the aggluti- 

 nability and the opsonisation of the cells. 



Opsonisation appears to be the first phase of agglutination." 



C. K. Schneider. 



30. Anonym. The supply of Nitrogen to Plants. (Gard. Chron., 

 3. ser., XXXIX, 1000, p. 170.) 



Kurze Besprechung von der angeblichen Entdeckung F- Jamesons in 

 Aberdeen „that all plants can feed upon the free nitrogen gas of the 

 atmosphere by the agency of the hairs that are found upon the leaves". 



C. K. Schneider. 



31. Raciborsky, M. Einige Chemomorphosen des Aspergillus niger. 

 (Bull. Int. Ac. Sei. Cracovie [1905], p. 764—778.) 



Verf. behandelt die „Morphotische Wirkung der Thiosulfate", die 

 „Wirkung des Chloroforms" und „Die Wirkung des Jods und seiner Ver- 

 bindungen". C. K. Schneider. 



32. KamerliDg, Z. De assimilatie van de rietplant. (Arch. Java 

 Suiker, XIII [1905] p. 303—312. Zugleich Meded. Proefst. Kagok, No. 81.) 



Bei gutem Wetter nehmen die Blätter des Zuckerrohres während der 

 Vormittagsstunden 15% an Trockensubstanz zu bei üppigem Wachstum, 

 10 — 15% bei massigem Wachstum, 5 — 10% bei schlechtem Wachstum und 

 weniger als 5% bei Wachstumshemmung. Seh oute. 



33. Burgers, P. H. Mangaan. (Cultura, XVII [1905], p. 302—304, mit 

 einer Tafel.) 



Bericht eines gelungenen Versuches mit Mangandüngung bei Mais. 



Schoute. 



34. Gola, Guiseppe. Ricerche sui rapporti tra i tegumenti semi- 

 nali e le soluzioni saline. (Annali di Botan., III [1905], p. 59 — 100.) 



