$4.60 per Year (Foreign). 
THE 
AMERICAN 
NATURALIST 
A MONTHLY JOURNAL 
DEVOTED TO THE NATURAL SCIENCES 
IN THEIR WIDEST SENSE. 
MA GING EDITO 
Prors. E. D. COPE, i sons AND J. rx KINGSLEY, Boston. 
Je ASSOCIATE EDITORS: 
ig ue WHITMAN, Chicago, Dr. C. E. BESSEY, Lincoln, Neb., THOMAS WILSON, taiiga, 
Pzor. C. M. WEED, Durham, N. H., Pror. W. S: BAYLEY, Waterville, Maine, Pror: E. A. ANDREWS, Baltimore, 
. N. LOCKI INGTON, Rugby, Eng! 
XXVII. OCTOBER, 1893. 
a PAGE. | 
OLOGY IN ITs GENERAL RE . (Con- 
As Am =. " cay t Florida Keys. > Pei 
z esis a Geology and PERERIN New Amant 
E Bei «c. Pierre A. Fish, 860 : 
OF AN ACQUIRED CHARACTERISTIC. 
eoe Alpheus Hyatt. 865 
(Ilus- 
mon ed TET ee 
DE : Xs B cor? c POLY Moore. PREES at He idelberg—P etrographical 
useum bo Chicas Doei aira Fw Mi Ar UA APIS Minerals — Mineral g 
of P ud x 
S thy cable News—Miscellaneous. NUM 
E B — Two Trig’ ‘Galls on 
ion, 
Doors ano Pairs. T e "Rr eT 
T —Wiedersheim’ DS. i: EB 
— Mills .Diatomacex — Kennels -| e 
E r ^ = Rm E and | Bio — The 
* 
