ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 



257 



As the calcium chloride mantle dries the air, the sporanges open quickly > 

 and it is only necessary to alter the position of s from time to time to- 



Fig. 61. 



Fig. 62. 





disseminate spores over all the surface 

 of the culture medium. When the 

 sowing of the spores is finished, the 

 culture layer may be moistened with- 

 out removing the bell-jar. 



Warm Cupboard for Germination 

 Purposes. * - — ITerr F. Noll describes 

 a warm cupboard, the object of which 

 is partly to act as a protective screen 

 against the heat of stoves, and partly 

 to make use of the surplus heat for 

 germination and other similar pur- 

 poses. The cupboard is made of 

 sheet iron, has six shelves, and is 

 divided into upper and lower com- 

 partments, each of which is closed by 

 doors. At the end of each shelf is 

 an aperture which may be closed by 

 a sliding-panel. The cupboard is 

 118 cm. high, 60 cm. broad, and 18*5 

 cm. deep. The cupboard, when in the 

 vicinity of a stove burning through- 

 out the night, is found to keep at a 

 temperature of 20°-25 c . and is there- 

 fore very suitable for the cultivation 

 of roots, fungi, and bacteria. 



Simple Method for Anaerobic 

 Cultivation in Fluid Media.t— Dr. 

 C. H. Wright describes a method 

 which depends on the fact that a flex- 

 ible rubber tube closes itself air-tight when it is bent beyond a certain 



* Flora, Ixxxvi. (1899) pp. 382-3 (1 fig.). 



t Centralbl. Bakt. u. Par.. l te Abt., xxvii. (1900) pp. 71-5(1 fig.). 



