PLATE I. 



BIOPLASM OR LIVING MATTER AND FORMED MATERIAL OF COMMON 



MILDEW. 



The figures in this drawing have been copied from specimens well stiined by immersion in carmine 

 lluid. a. Spores protected by a thick layer of formed material 6, Smallest particles of bioplasm 

 -..vi;hin ; any 'one of these minute particles might grow. <?, A. spore buisting; bioplasm escaping 

 d, A spore enlarged by growth, e A spore sprouting. /.An old spore, the formed material ot which 

 has been much" thickened by the formation of new layers wilhiu. The remaining figures show the 

 growth of the long filaments (mycelium) and the fructification, A, of the tungus. 



It will be noticed ttat in all the changes the bioplasm only takes part. The formed material is perfectly 

 passive, and does not GROW. Magnified I'OO diameters. 



Old spores of fungi, in which 

 termed material has become very 

 thick. At a 'the bioplasm is passing 



Fig". 3. 



a 



Fig. 4. 



t^rrns of fungi, show- 

 ing the relation of the 

 bionlasm to the formed 



is given in Fig 4. x lh(K' 



auction of the latter 



from the former. 



X 1600. 



assage of bioplasm through 



ores in formed material, 



showing the manner in wlr.ch 



the branching stems of fungi 



are formed X ItOO. 



[o\5o of an in.cn 



[To face page 194. 



