SCIENCE. 



Editoeial Committee : S. Newcomb, Mathematics ; R. S. Woodward, Mechanics ; E. C. Pickering, As- 

 tronomy ; T. C. Mendexhall, Physics ; R. H. Thurstox, Engineering ; Ira Remsen, Chemistry ; 

 Joseph Le Conte, Geology; W. M. Davis, Physiography; O. C. Marsh, Paleontology; W. K. 

 Brooks, Invertebrate Zoology ; C. Hart Meeriam, Vertebrate Zoology ; N. L. Britton, 

 Botany ; Hexry F. Osborn, General Biology ; H. P. Bowditch, Physiology ; 

 J. S. Billings, Hygiene ; J. McKeen Cattell, Psychology ; 

 Daniel G. Brinton, J. W. Powell, Anthropology. 



Friday, May 10, 1895. 



CONTEXTS: 

 Current Xotes on Physiography ( VI. ): W. M. 



Davis 505 



Xotes on Agriculture (II. ) : Byron D. Halsted.509 



Lagoa Santa ; Erwix F. Smith 510 



The Progress of Pnronijmy : BuRT G. WiLDEE. . .515 



The Murine Biological Laboratory 516 



The Generic Xames of the Three-toed Echidna: T. 



S. Palmer 518 



Correspondence : — 519 



Spectroscopic Oliservations of Saturn at the Alle- 

 gheny Obserratory : jAMES E. Keeler. A 

 General Subject-Index to Periodical Scientific Lit- 

 erature: Edwards. Holden. 



Scientific Literature : — 5"22 



Bothpletz' Ost-Alpeii: Andrew C. Lawson. 

 Yokoymna's Mesozoic Plants: Wm. M. Foux- 

 TAINE. Arnold's Chemistry: EDWARD H. 

 Keiser. Gray's Botany: N. L. B. Botan- 

 ical: Joseph F. James. 



Notes and Xeics : 528 



Societies and Academies : — . : 531 



The Biological Society of Wwihington ; The Bos- 

 ton Society of Xatural History. 

 Scientific Journals: — 532 



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

 for review should be sent to the responsible editor, Prof. J. 

 McKeen Cattell, Garrison on Hudson, N. Y. 



Subscriptions and advertisements should be sent to .Science, 

 41 N. Queen St., Lancaster, Pa., or 41 East 49th St., New York. 



CURRENT NOTES ON PHYSIOGRAPBY (VI.). 

 SURFACE CURRENTS OF THE GREAT LAKES. 



A REVISED edition of the atlas of ' Surface 

 Currents of the Great Lakes,' as deduced 

 from the movements of bottle pajjers during 

 the seasons of 1892, 1893 and 1894, by Pro- 

 fessor ^I. W. Harrington, has lately been 

 issued as Bulletin B of the Weather Bureau. 



The text describes the method of study, and 

 gives tables of the prevailing winds of the 

 lake-port stations and a list of recovered 

 bottles, 672 being found out of nearly 5000 

 floated. The chief drifts are : eastward 

 along the south side of Superior, westward 

 along the north side ; south along the west 

 side of Michigan and Huron, north along 

 the east side ; generally eastward in Erie 

 and Ontario. Many irregular movements 

 are noted, especiallj' near shore. Local 

 and transient currents, formed during se- 

 vere gales, are sometimes strong enough to 

 drag vessels from their moorings. " There 

 also occurs, occasionally, on the Great 

 Lakes a phenomenon which may be called 

 a geiche, namely, a wave of considerable 

 height which travels unaccompanied by 

 other waves, and is seen by na\'igators as a 

 white wall approaching and rapidh' passing 

 them." Following the use of the term seiche 

 on the Swiss lakes, where it originated, it 

 would be more properly applied to the rise 

 and fall of the water on the shore, in periods 

 of generally less than an hour ; these being 

 well known at our Lake ports, but as yet 

 very little studied. These white-walled 

 waves also call for investigation. 



HUCHAN's CHALLENGER REPORT ON OCEANIC 

 CIRCULATION. 



The latest volume of the Challenger re- 

 ports contains thirty-eight pages of text and 

 sixteen maps, prepared by Dr. Alexander 



