NEWS AND NOTES 



A new tropical laboratory for botanical and zoological research 

 is soon to be established at Mayagiiez, Porto Rico, with Dr. F. L. 

 Stevens as director. 



F. Gueguen, in Comptes Rendus, suggests that certain bodies 

 found on the hyphae of a new species of Mucor are organs for 

 the elimination of metabolic products. 



In Publication i of the Botanical Society of Western Penn- 

 sylvania, D. R. Sumstine gives a list of eighty of the more con- 

 spicuous fungi collected within the limits of Pittsburg. 



An article on nut diseases, by M. B. Waite (Proc. Am. Pomol. 

 Soc. 182-190. 1911), treats several serious diseases of nut-bear- 

 ing trees and suggests methods of control. Diseases of the pecan 

 receive special attention. 



Dr. P. Spaulding, of the division of Forest Pathology at Wash- 

 ington, has published a bulletin dealing in a very thorough 

 manner with the life history of Lenzites sepiaria and its effects 

 on timber. Under preventive measures, he recommends season- 

 ing, floating, and infiltration with poisonous chemicals. 



Dr. C. H. Kauffman has published in the Thirteenth Report of 

 the Michigan Academy of Science, 191 1, some very useful keys 

 to the common genera of basidiomycetes and ascomycetes. His 

 list of unreported Michigan fungi is also continued as in previous 

 years. 



The leaf-spot of orchids {Hypodermium) , which begins at the 

 apex of the leaf and gradually works downward until the entire 

 leaf is killed, may be checked, according to F. T. Brooks, by 



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