THE JOURNAL OF MICROSCOPY 



AND 



NATURAL SCIENCE : 



the journal of 

 The Postal Microscopical Society. 



JULY, 1887. 



2)imorpbi£ini in f uiiGi. 



By George Norman, M.R.C.S., F.R.M.S., etc. 

 Plates 15, 16, 17. 



PROPOSE under this head to treat whatever may 

 be further included under the terms Polyimor- 

 PHiSM, Pleomorphism, and Hetercecism. The 

 subject is one of very great interest owing to the 

 effect that is being produced by this systematic 

 study of the life histories of Fungi on the old lines 

 of classification. Many genera and families are 

 now seen to have no independent position, but to 

 be simply stages in the growth of some other 

 fungus, and a thoroughly fresh classification is thus needed — and is 

 in fact being already attempted — amongst nearly all classes of Fungi 

 except the Hyiimiomyceies. The subject is also one of very great 

 difficulty owing to the minuteness and fragility of the parts to be 

 observed, the great resemblances between certain parts of the 

 Vol. VI. K 



