The American Naturalist. 



ASSOCIATE EDITORS: 

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

 E. A. ANDREWS, Vn.D.,fohns Hopkins University, Baltimore. 

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

 CHARLES E. BKECHER, Ph.D., Fa/, University, New Haven. 

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



ALES HRDLICKA, M.D., Nev 

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



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



J. G. NEEDHAM, Ph.D., Lake Forest University. 



ARNOLD E. ORTMANN, Ph.D., Princeton University. 



D. P. PENHALLOW, S.B., F.R.M.S., McGill University, Montreal. 



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



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



FRANK RUSSELL, Ph.D., Harvard University, Cambridge 



ISRAEL C. RUSSELL, LL.D., University of Michigan, Ann Arbor. 



ER.WIN F. SMITH, S.D., U.S. Department of Agriculture, Washington: 



LEONHARD STEJNEGER, LL.D., Smithsonian Institution, Washing 



W. TRELEASE, S.D., Missouri Botanical Garden, St. Lends? ' 



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



WILLIAM M. WHEELER, Ph.D., University of Texas, Austin. 



The American Naturalist is an illustrated monthly magazine 

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

 facts and discoveries in Anthropology, General Biology, Zoology, 

 Botany, Paleontology, Geology and Physical Geography, and Miner- 

 alogy and Petrography. 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; and m addition to these there will be briefer articles on various 

 points of interest, editorial comments on scientific questions of the 

 day, critical reviews of recent literature, and a final department for 

 scientific news and personal notices. 



All naturalists who have anything interesting to say are invited 

 to send m their contributions, but the editors will endeavor to select 

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

 -ltten so as to be intelligible, instructive, and interesting 



the general scientific reader. 

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

 X t\\ k . American Naturalist, Cambridge, Mass. 

 u,; A uL bUSmeSS comm unications should be sent direct to the 



GINN & COMPANY, Publishers. 



