SCIENCE 



Friday, September 30, 1910 



COjSITENTS 

 The Flora of the British Islands: Pkofessoe 

 James W. H. Tbail 417 



The American Chemieal Society 425 



Scientific Xotes and Neics 426 



University and Educational Neics 428 



Discussion and Correspondence: — 



Practical ttomenclature: Pbofessoe T. D. 



A. COCKEEELI, 428 



Scientific Books: — 



Russo's Studien ueber die Bestimmung des 

 weiblichen Geschlechtes : Peofessob C. E. 

 McClung. Lehmer's Factor Tables for the 

 First Ten Millions: Peofessob G. A. 



illLLEE 429 



Shackleton's Contribution to Biogeography : 

 Chables H. T. Towxsend 433 



The Influence of Nutrition upon the Animal 

 Form : Pbofessoe E. T. Beu, 435 



Special Articles: — 



The Isolation of an Ion, a Precision Meas- 

 urement of its Charge, and the Correction 

 of Stokes's Law: Pbofessoe R. A. Mil- 

 LiKAx 436 



MSS. intended for publication and books, etc., intended for 

 review should be 8e3t to the Editor of SciEh'CE, Garrison-on- 

 Bnd30B, N. Y. 



THE FLORA OF TEE BRITISH ISLANDS' 

 The honor conferred in the election to 

 be president for the year of the Botanical 

 Section of the British Association imposes 

 the duty of preparing an address. I trust 

 that my selection of a subject will not be 

 attributed by any one to a want of appre- 

 ciation of the worth and importance of cer- 

 tain sides of botanical research to which I 

 shall have less occasion to refer. These 

 have been eloquently supported by former 

 presidents, and I take this opportunity to 

 express the thanks I owe for the benefit 

 received from their contributions to the 

 advancement of the science of botany. 

 They have told us of the advance in de- 

 partments of which they could speak as 

 leaders in research, and I do not venture 

 to follow in their steps. My subject is 

 from a field in which I have often experi- 

 enced the hindrances of which I shall have 

 to speak, both in personal work and still 

 more as a teacher of students, familiar 

 with the many difficulties that impede the 

 path of those who would gladly give of 

 their best, but find the difficulties for a 

 time almost insurmountable, and who are 

 too frequently unable to spare the time or 

 labor to allow of their undertaking scien- 

 tific investigations that they might well 

 accomplish, and in which they would find 

 keen pleasure under other conditions. 

 Those whose tastes lie in the direction of 

 "studying plants in the field rather than in 

 the laboratory' are apt to find themselves 

 hampered seriouslj' if they seek to become 

 acquainted with the plants of their ovm 



'Address of the president of the Botanical Sec- 

 tion of the British Association for the Advance- 

 ment of Science, Sheffield, 1910. 



