SCIENCE 



A WEEKLY JOURNAL DEVOTED TO THE ADVANCEMENT OF SCIENCE, PUBLISHING THE 



OFFICIAL NOTICES AND PROCEEDINGS OF THE AMERICAN ASSOCIATION 



FOR THE ADVANCEMENT OF SCIENCE. 



Friday, September 14, 1906. 



CONTENTS. 

 Botany in England: Professor F. W. Ouvee 321 



The Correspondence School — its Relation to 

 Technical Education and some of its Re- 

 sults : J. J. Claek 327 



The Present Needs of the Harvard Medical 

 School: Dr. F. B. Malloey 334 



Scientific Books: — 



Bailey's Text-hook of Sanitary and Applied 

 Chemistry : Professor Ellen H. Richards. 

 Fischer's Animal Mechanics : T. D. Bernth- 

 sen's Kurzes Lehrhuch der organischen 

 Chemie: Professor W. A. Notes 388 



Discussion and Correspondence: — 



An Unusual Meteor: Professor Cleveland 

 Abbe. Some ' Definitioiis ' of the Dyne : 

 Harold C. Barker 340 



Special Articles: — 



A Peculiar Mutation of the Pine Marten: 

 Marcus W. Lyon, Jr. An Object-finder 

 for the Micro-projection Apparatus: Amon 

 B. Plowman. Helium in Natural Gas : 

 Hamilton P. Cady, David F. McFaeland. 341 



Current Notes on Meteorology : — 



Dr. Hann and the ' Meteorologische Zeit- 

 schrift 'j Anti-trades in Central America 

 and the West Indies; Rainfall, Temperature 

 and Tree Growth; Cumulus Clouds over 

 the San Francisco Fire: Professor R. DeO. 

 Ward 344 



Proposed Union of Medical Societies in 



London 346 



Cheaper Liquid Air 346 



Radium 347 



Scientific Notes and Neios 849 



University and Educational News 351 



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

 review should be sent to the Editor of Science, Garrison-on- 

 Hudson, N. Y. 



BOTANY IN ENGLAND.^ 



The period of twenty-five years that has 

 elapsed since the British Association last 

 met in this city all but includes the rise 

 of modern botany in this country. During 

 the middle decades of last century our 

 botanists were preoccupied with arranging 

 and describing the countless collections of 

 new plants that poured in from every 

 quarter of an expanding empire. The 

 methods inculcated by Linnseus and the 

 other great taxonomists of the eighteenth 

 century had taken deep root with us and 

 choked out all other influences. Schlei- 

 den 's ' Principles of Botany, ' which marked 

 a great awakening elsewhere, failed to 

 arouse us. The great results of Von Mohl, 

 Hofmeister, Nageli and so many other no- 

 table workers, which practically trans- 

 formed botany, were at first without visible 

 effect. 



It was not that we were lacking in men 

 capable of appreciating the newer work. 

 Henfrey, Dr. Lankester (the father of our 

 president), not to mention others, were 

 continually bringing these results before 

 societies, writing about them in the jour- 

 nals, and translating books. But the thing 

 never caught on— it would have been sur- 

 prising if it had. You may write and talk 

 to your contemporaries to your heart's con- 

 tent, and leave no lasting impression. The 



^ Concluding part of the opening address of 

 Professor F. W. Oliver, F.R.S., president of the 

 Section of Botany, at the York meeting of the 

 British Association for the Advancement of 

 Science. 



