50 



of June to the middle of July for work on the identification and 

 ecological relations of the moss flora of the region. 



The U. S. Department of Agriculture has published a bul- 

 letin, 1072-F, entitled Prickl}- Pear as Stock Feed. The various 

 forms of prickly pear are valuable as stock feed, especially in 

 times of drought. The spiny varieties may have the spines 

 burned off with a gasoline torch or be chopped by machinery. 

 The plants may survive severe droughts for many months, but 

 requires a good water supply at some time each year. They 

 are growing in favor in the southwest as succulent forage that 

 may take the place of silage. 



At the annual science dinner of the teachers of biology, 

 chemistry and physics in the New York High Schools on April 

 20th, Dr. Stewart Gager, Director of the Brooklyn Botanic 

 Garden gave an address on the effects of radium on the 

 development and inheritance of plants. 



At the annual meeting commerative of the birth of Charles 

 Darwin of the Botanical Seminar of the Michigan Agricultural 

 College Dr. John H. Schaffner of Ohio State University de- 

 livered an address on Experiments in the Control of Sex in 

 Plants. 



The volume on "The North American Cup-fungi" by 

 Dr. Fred J. Seaver of The New York Botanical Garden, a 

 preliminary notice of which appeared in an earlier number 

 of Torreya was issued in December, 1928. For a number of 

 years the author of this work has been a member of the Local 

 Flora Committee of the Torrey Botanical Club, the cup-fungi 

 being one of the groups assigned to him for study. \\'hile the 

 present volume is not restricted to the local flora, it includes 

 all the forms of this particular group known within the local 

 flora range and should therefore be of interest to the members of 

 the Club. It is expected that this will be followed after a few 

 years by a second volume of the inoperculate members of the 

 same group. More detailed information regarding the work can 

 be obtained by addressing The New York Botanical Garden, 

 Bronx, New York City. 



Professor John Harshberger of the Botanical Department of 

 the University of Pennsylvania will visit Australia and New 



