SCIENCE 



Friday, January 24, 1919 



CONTENTS 



The American Association for the Advance- 

 vient of Science: — 



The Physiography of Vermont: Professor 

 George H. Perkins 77 



What Kinds of Botany does the World need 

 now.' Professor George J. Peirce 81 



David Ernest Lantz : Ned Dearborn 84 



Professor Ludvig-Sylow : Professor G. A. 

 Miller 85 



Scientific Events: — 

 The British Glassware Industry; The Study 

 of Industrial Fatigue; State Parks for 

 Iowa; Plans^of the Sockefeller Foundation. 86 



Scientific Notes and News 88 



University and Educational News 91 



Discussion and Correspondence: — 



Eucalyptus never present in North America: 

 Professor Edwaed W. Berry. The Eich- 

 ardton Meteorite: Terence T. Qdieke. ... 91 



Scientific Bools: — 



Cory's Catalogue of Birds of the Americas: 

 Harky C. Oberholseb 93 



Special Articles: — 



Psychological Eesearch in Aviation: Pro- 

 fessor Knight Dunlap 94 



The Mathematical Association of America: 

 Professor W. D. Cairns 97 



The American Society of Zoologists; Section 

 F — Zoology of the American Association 

 for t)w Advancement of Science: Professor 

 W. C. Allee 9S 



MSS. iDtended for publication and books, etc., iotended for 

 review ehould be sent to The Editor of Science, GarriaoD-on- 

 Budaon, N. Y. 



THE AMERICAN ASSOCIATION FOR 



THE ADVANCEMENT OF SCIENCE 

 THE PHYSIOGRAPHY OF VERMONT^ 



At this time no discussion of many inter- 

 esting though difficult and perplexing ques- 

 tions to which a study of Vermont physiog- 

 raphy gives rise will be attempted, but simply 

 a brief consideration of its most conspicuous 

 features. 



Geologically Vermont is one of the oldest 

 parts of the country as it contains very little 

 rock that was formed later than the Ordo- 

 vician. The geological history of Vermont, 

 like that of most regions, may be properly 

 divided into several distinct periods. 



The Adirondacks of New York on the west 

 side of Lake Champlain are mostly Pre-Cam- 

 brian and at the same time, or probably some- 

 what later, but still in Pre-Cambrian time, a 

 fold or folds, rose on the east and formed the 

 first elevation of the Green Mountains. Thus 

 the Champlain Valley with its present outline 

 was established in this early period. 



Pre-Cambrian rocks have been found in the 

 Green Mountains in only a few localities, but 

 as yet no extended study of these mountains 

 has been made. When thorough investigation 

 shall reveal their complete structure the back- 

 bone or axis of the Green Mountains will 

 almost certainly be found to be of an age 

 earlier than the Paleozoic. 



At this time then there was the Adirondack 

 ridge on the west and the Green Mountains 

 ridge on the east and between them a strait 

 or channel which connected New York Bay 

 with the St. Lawrence Gulf. An era of ero- 

 sion and subsidence followed and the great 

 ocean rolled over the whole country east of 

 the Adirondacks. 



1 Address of the vice-president and retiring 

 chairman of Section E, Geology and Geography, 

 American Association for the Advancement of 

 Science, Baltimore, December, 1918. 



