34 



BACTERIA IN RELATION TO PLANT DISEASES. 



paper,* using a hot-water funnel. Later he foUowed Schutz's method ('92, Bibliog., 

 XVI), which is a very good one. This consists in cutting the agar into small bits 

 and first heating it very hot in a beaker or enameled-iron dish in a minimum quantity 

 of water or beef-bouillon over a hot Bunsen flame with constant and rapid stirring and 



Fig. il: 



*Tlic folded filter papers are the most convenient (fig. 34). These filter papers give the starch 

 reaction (Wue) with liodinc, and reduce Fehling's si.Uition on being boiled in it. 



fFiig. 32.— Unnamed species of red sea^wcedsCCfZ/rfm/;;) fmnishing agar-agar. From a Japan- 

 ese chart showing " The principal aqnatic plants of Japan," supposed (o be an official publication. 

 One-balf natural size. Original in library of United St.ites Fish Commission. 



