liotanical Laboratory of the Carnegie Institution at Tucson, 

 Arizona, where he will continue the researches which he began 

 there during the summer of 1904. 



Popular interest in the study of American trees will be stimu- 

 lated by the recently published " Manual of the Trees of North 

 America (exclusive of Mexico) " by Charles Sprague Sargent, 

 director of the Arnold Arboretum of Harvard University. The 

 descriptions are accompanied by text-figures. A recent work of 

 more general scope but with special reference to the native and 

 cultivated trees of Great Britain is entitled " Trees : A Hand- 

 book of Forest Botany for the Woodlands and the Laboratory" 

 and is written by Professor H. Marshall Ward, of Cambridge 

 University. This is in two small octavo volumes and forms a 

 part of the Cambridge Biological Series. 



Under the patronage of the Caroline and Olivia Phelps Stokes 

 P\mdof the New York Botanical Garden, the Wild Flower Pres- 

 ervation Society of America has printed on cloth (10 x 12 in.) 

 numerous copies of the following notice : " The Gathering of 

 Wild Mowers and Ferns and the Cutting or Injuring of Any Tree 

 or Shrub, or the Starting of Fires on these Premises, is Strictly 

 Forbidden under Penalty of the Law." Any one desiring to 

 make use of such notices will be supplied with them gratis on 

 application to Mrs. N. L. Britton, Secretary of the Wild Flower 

 Preservation Society of America, New York Botanical Garden, 

 Bronx Park, New York City. 



An experiment is being made at the New York Botanical 

 Garden in the direction of active cooperation with the nature-stud}' 

 work of the public schools of New York City, the experiment 

 being begun with the children of the " 4 B " grade of the Bor- 

 ough of the Bronx. The course consists of three illustrated 

 lectures, supplemented by demonstrations in the museums and 

 greenhouses, and also out of doors, with the cultivated and native 

 plants of the Garden. The first lecture of the series has been 

 given by Dr. Marshall A. Howe, assistant curator ; the second 

 will be given by Mr. George V. Nash, head gardener, and the 

 third by Dr. N. L. Britton, director-in-chief, other members of 



