GERMINAL OR LIVING MAlTER AND FORMED MATERIAL OF COMMON 



MILDEW. 



In tliis drawing the germinal or living matter of mildew during growth is represented. The figures 



have been copied from specimens -well stained by immersion in carmine fluid, a. spoi-es protected 



by a thick layer of formed material. 6, smallest particles of germinal or living matter within ; any 



one of these minute particles might grow, e, a spore bursting ; germinal matter escaping, d, a spore 



enlarged by growth, e, a spore sprouting, f, an old spore, the formed material of which has been 



much thickened by the formation of new layers within. The remaining figures show the growth of 



the long filaments (mycelium) and the fructification of the fungus. It will be noticed that in all 



changes the germinal matter only takes part. The formed material is perfectly passive 



does not GROW. Magnified 17CO diameters. 



- h of an inch i 



.1 x T 



