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It is reported in Science that Dr. William Trelease of the 

 University of Illinois has been granted leave of absence from the 

 university until May first, for a botanical expedition to Guate- 

 mala. 



The report on the geography and vegetation of northern 

 Florida by Dr. R. M. Harper, comprising over 300 pages, and 

 issued by the Florida State Geological Survey late in 1914, may 

 be had free by applying to the Survey at Tallahassee, Florida, 

 and enclosing postage. 



It is reported in Science that Henry Chandler Cowles, Charles 

 Joseph Chamberlin, and Otis William Caldwell have all been 

 promoted to be professors of botany at the University of Chicago. 



Dr. and Mrs. N. L. Britton, Dr. and Mrs. N. Wille, and Messrs. 

 Stewardson Brown and J. F. Cowell have all returned from 

 Porto Rico where they were carrying on botanical exploration of 

 that island. 



Announcements have been issued for the field meetings of the 

 club from April 3 to May 31. Some of these meetings are to be 

 held on Sunday instead of Saturday as heretofore. Copies of this 

 announcement may be had from Mr. Percy Wilson, chairman of 

 the field committee. New York Botanical Garden, Bronx Park, 

 N. Y. City. 



Dr. John K. Small, New York Botanical Garden, recently re- 

 turned from southern Florida. He spent about four weeks ex- 

 ploring and collecting in the little-known parts of tropical Florida. 

 Most of the time was devoted to unexplored hammocks of the 

 Everglade Keys. Interesting results were obtained and a num- 

 ber of West Indian species were added to the flora of the United 

 States. 



A Monograph of the Usneaceae of North America and Canada, 

 by R. A. Howe, Jr. (Memoir of the Thoreau Museum of Natural 

 History), appeared early in April, 1915. It completes the treat- 

 ment of the genus Usnea. 



Professor H. H. Whetzel, of Cornell University, spent the 

 early part of April in New York, visiting the botanic gardens 



