446 



Brooks: The Fruit Spot of apples 



required for complete liquefaction. In old cultures the liquid was 

 slightly browned. In stab cultures the growth was arborescent 



[figure i (text)]. 



On beet bouillon gelatin. — The hyphae were darker than those 



in the beef gelatin and the liquefied gelatin was brown from the first. 



-tap* 



I 



2 



Figure I. Stab culture of Cylindro- Figure 2. Stab culture of Cylindro- 

 sporium Pomi on beef bouillon gelatin. sporium Pomi on beet agar. 



On apple bouillon gelatin. — The development was slower 

 in other gelatins. The fungous mass was olive-black. The ge 



than 



mbonate 



was liquefied and browned. 



/;/ beef bouillon agar. — The surface growth was u 

 It was pink in color and had the appearance of a bacterial cu 

 Later the growth sometimes became darker at the margins, 

 hyphae were abundantly septate and the cells often swollen to 

 cular form and to several times their usual width. Typical sp 

 were not produced. . • 



On glycerin agar. — The appearance of the colonies was 

 lar to those on beef agar but they soon turned to an olive c 

 The hyphae appeared normal and spores were produced in a 

 ance. But few aerial hyphae developed. « ter 



On maltose agar. — The colonies were pink at first u ^ 

 were covered with hyaline aerial hyphae. The developmen 

 slow and but few spores were produced. 



