1 Nov. 1905.1 



Mycohigical Bullctiu No. 4." 



175 



Bacteria in Relation to Plant Diseases.- — This is the title of a 

 work of 285 pages — the same (Volume I) being devoted to methods of 

 work and literature. We show some of the illustrations by permission 

 of the author ; the electros were kindly placed at our disposal by the 

 Carnegie Institution of Washington, taken from the work issued as their 

 "Pul)lication No. 27."' 



jf^HtNWtR. 



Fig. 145. Piac-te'-ri-um mal-va-ce-a'-rum — Early stage of infection throiiRli a 

 stoniatc of a leaf of the Cotton plant. From Erwin F. Smith's ]5acteria in kclatior. 

 \o I'lant Diseases. 



