iv CONTENTS 



The Role of the Glacial Anticyclone in the Air Circulation of 



the Globe. By William Herbert Hobbs 185 



The Test of a Pure Species of CEnothera. By Bradley Moore 



Davis 226 



Concretions in Streams Formed by the Agency of Blue Green 

 Algae and Related Plants. By H. Justin Roddy, M.S., 



Ph.D 246 



The Conditions of Black Shale Deposition as Illustrated by the 

 Kupferschiefer and Lias of Germany. By Charles 



ScHucHERT 259 



On the Rate of Evaporation of Ether from Oils and its Applica- 

 tion in Oil-ether Colonic Anesthesia. By Charles Basker- 



ville, Ph.D., F.C.S 270 



Symposium on the Earth : Its Figure, Dimensions and the 

 Constitution of its Interior : 

 I. The Interior of the Earth from the Viewpoint of Geol- 

 ogy- By T. C. Chamberlin 279 



II. Constitution of the Interior of the Earth as Indicated 

 by Seismological Investigations. By Harry Field- 

 ing Reid 290 



HI. The Earth from the Geophysical Standpoint. By 



John F. Hayford 298 



IV. Variations of Latitude : Their Bearing upon our Knowl- 

 edge of the Interior of the Earth. By Frank 



Schlesinger 351 



Morphology and Development of Agaricus rodmani. By Geo. 



F. Atkinson 309 



The Euler-Laplace Theorem on the Decrease of the Eccen- 

 tricity of the Orbits of the Heavenly Bodies under the Secular 



Action of a Resisting Medium. By T. J. J. See 344 



A Practical Rational Alphabet. By Benjamin Smith Lyman 359 

 The Cambrian Manganese Deposits of Conception and Trinity 



Bays, Newfoundland. By Nelson C. Dale 371 



Obituary Notice of Members Deceased iii-xii 



Minutes iii-xv 



