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richness of the spores of the March plant, for the spores so easily breaking through 

 the cuticle, for their polymorphic shapes, for their injuring their host as they do— 

 I venture to suggest that in March the Conium itself is growing, and, there- 

 fore, the Puccinia finds an easier nidus on which to increase as to its mycelium ; it 

 can better get its nourishment ; and, above all, it can meet with little opposition 

 in bursting through its host, because the cuticle thereof is tender, soft and young; 

 whereas, later on in the year, it is much harder, much more like straw. This fact 

 has enabled me, indirectly, to confirm Dr. Greville's figures of Puccinia Variabilis 

 as to their veracity, to show that Puccinia Variabilis is not a true species, but a 

 variety, and to write about a singular development of the spores of the Puccinia 

 Conii. 



J. E. VIZE. 

 Forden Vicarage, Sept. 22nd, 1877. 



