142 THE PLANT WORLD. 



the zenith, we know that at the phice and date first mentioned, 

 it is 30.1 degrees below or south of this point. Thus, in places 

 where this heliotropism appeared most strongly, the plants were 

 pointing practically straight toward the noonday sun. 



Of the many winter annuals blooming and fruiting at this 

 place in February and March, a considerable number exhibit 

 more or less heliotropism of this kiiid, i. e., the kind that pro- 

 duces leaning stems. But none are so strongly affected as 

 Sisymbrium canescens. J. C. jSlumee. 



Dr. Pelir Olsson-Sejfer, who has been spending the past year 

 in a journey around the world for the special study of certain 

 botanical problems, has returned to this country on his way to his 

 home in Mexico. The readers of The Plant World have had 

 the pleasure of following in his steps month by month by reading 

 his interesting accounts of the various botanical gardens which he 

 has visited. 



Dr. Pi. II. Pond has been granted a research scholarship for 

 a second term in the Xew York Botanical Garden, and will con- 

 tinue his work in that institution during the summer. 



Dr. F. E. Clements, recently Professor of Plant Physiology 

 in the University of Xebraska, has beeen elected to the chair of 

 Botany in the University of Minnesota. The incumbent of this 

 chair is also State Botanist and has charge of the botanical work 

 of the Geographical and Xatural History Survey of the region. 



An International Conference on Plant Hardiness and Ac- 

 climatization will be held under the auspices of the Horticultural 

 Society of ISTew York on September oOth, and October 1st and 

 2d. Delegates from nearly all of the States, Canada, Europe, 

 Africa and elsewhere have signified their intention of attending, 

 and the meeting promises to furnish a fine array of papers and 

 discussions. Twenty-four titles have already been furnished 

 the Secretary. The proceedings will be published as Volume 

 II of the memoirs of the society. 



The sum of $1,200,000 has been given to Princeton Univer- 

 sity for the erection of two buildings, one for physical sciences, 



