The American Naturalist 



J. A. ALLEN, Ph.D., American Museum of Natural History, New York, 

 E. A. ANDREWS, Ph.D., Johns Hopkins University, Baltimore 

 WILLIAM S. BAYLEY, Ph.D., Colby University, WaterviOe 

 DOUGLAS H. CAMPBELL, Ph.D., Stanford University 

 J. H. COMSTOCK, S.B., ComeU University, Ithaca 

 WILLIAM M. DAVIS, M.E., Harvard University, Cambridge 

 ALES HRDLICKA, M.D., U. S. National Museum, Washington. 

 D. S. JORDAN, LL.D., Stanford University 



CHARLES A. KOFOID, Ph.D., University of California, Berkeley, 

 3. G. NEEDHAM, Ph.D., Cornell University, Ithaca 

 ARNOLD E. ORTMANN, Ph.D., Carnegie Museum, Pittsburg 

 D. P. PENHALLOW, D.Sc, F.R.S.C., McGill University, Montreal 

 H. M. RICHARDS, S.D., Columbia University, New York 

 W. E. RITTER, Ph.D., University of California, Berkeley 

 ERWIN F. SMITH, S.D., U. S. Department of AgricuUure, Washington. 

 LEONHARD STEJNEGER, LL.D., SmUhsonian InstUution, 

 W. TRELEASE, S.D., Missouri Botanical Garden, St. Louis 

 HENRY B. WARD, Ph.D., University of Nebraska, Lincoln 

 WILLIAM M. WHEELER, Ph.D., American Museum of Natural History, 

 New York 



The American Naturalist is an illustrated monthly magazine 

 of Natural History, and wiW aim to present to its readers the leading 

 facts and discoveries in General Biology, Anthropology, Zoology, 

 Botany, Paleontology, and the several branches of Geology. 



The contents each month will consist of leading original articles 

 containing accounts and discussions of new discoveries, reports of 

 scientific expeditions, biographical notices of distinguished naturalists, 

 or critical summaries of progress in some line; in addition to these 

 there will be briefer articles on various points of interest, editorial 

 comments on scientific questions of the day, and critical reviews 



All naturalUts who have anytfiing interesting to say are requested 

 to send their contrilmtkms; candidates for the higher scientific degrees 

 are in\dted to contribute concise summaries of the special literature 

 pertaining to their chosen topics. The editors will endeavor to select 

 for publication only that which is of true scientific value and at the 

 same time so written as to be intelligible, instructive, and interesting 

 to the general scientific reader. 



All manuscripts, books for review, exchanges, etc., should be 

 ^nt to Frederic T. Lewis, M. D., Harvard Medical School, Boston, 



All business communications should be sent to Messrs. Ginn 

 & CoMPAXY, 20 B<-acon St, Boston, Mass. 



GINN & COMPANY, Publishi 



