656 



FUNGI 



the act of forming spores, e an hour later than d, and _/' an hour 

 later than e. The cells which did not contain spores disappeared or 

 perished. r is a quadricellular rod with ripe spores, t/ 1 is a five- 

 celled i-od with three ripe spores placed in a nutrient solution after 



several days' desiccation, y- is the 

 same an hour after ; </ 3 is the same 

 after another two hours and a half. 

 A! is two spores with the walls of 

 the mother-cells dried and placed in 

 a nutrient solution ; h. 2 is the same 

 forty-five minutes later ; /, k, I, three 

 stages of germination of the spore. 



Bacillus anthracis and R. snbtili* 

 are very typical examples of endo- 

 sporous bacteria. B. anthracis has 

 been proved to be the virus of 

 anthrax or splenic fever. It is 

 found in great profusion in the 

 blood and tissues of animals attacked 

 (From De Bary' s 'SpttS % ^ disease in the form of rods 



Morphology of Fungi.') 



and filaments 

 5fi to 20/u in 

 length and 1/u to 1'25/z in width (fig. 490). 

 Fig. 491 shows two filaments grown on a 

 microscopic slide (De Bary) in a solution of 

 meat extract, partly in an advanced state of 



Y'S 



B 



l-'ic. 490. Bacillus antliracis, x 1,200. Blood 

 corpuscles and liacilli unstained ; from an inocu- 

 lated mouse. (Friiiikel and Pfeiffer.) 



FIG. 491. A, Bacillus 

 anthracis; B, B. sub- 

 tilis. (From De Bary 's 

 ' Fungi.') 



spore-formation. At the upper part of the figure tw r o ripe spores 

 have escaped. These s]iores on germination elongate and give rise 

 to new groii])s of n ids and filaments. 



