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THE 
. AMERICAN 3 
T NATURALIST 4 
A MONTHLY JOURNAL 
DEVOTED TO THE NATURAL SCIENCES 
IN THEIR WIDEST SENSE. 
MANAGING EDITORS: 
Pror. E. D, COPE, and Dr. F. €. Panton. Philadelphia, Pa., 
alpen AoT 
ESSEY, Lin 
or. W. 3 BAYLEY, raae Maine, 
ERW 
Pror. C. M. pdre Arita N. H. 
Pror. A. C. pais 
PRRP 
ae je WARREN, oA, 
or. E. A. ANDREW: 
IN F. SMITH, Washington, D: C: 
Vol. XXXI. 
JANUARY, 1897. 
bi A GROOVED STONE AXE FROM THE OHIO DRIFT. 
Me ter) 
oh 
Tus BioLocic ORIGIN OF weg VARI 
a ae ib py N fichols, 3 
(Contin 
FossILs AND Piai amot, Oh 
EP Gratar CA; 16 
‘THe BACTERIAL DISEASES OF Prawns: A CRI 
T STATE OF 
wi ‘i "Dre rwin F. Smith. 34 
—The Protentióa of Wild Ani- 
mmoth in Alaska—The Gyp 
ide Pe Museutn—Ser- 
eal fo kea oa 
erminative 
ROS e ciao 
<50 
Mineralogy and Blo 
zinzki on he 1 Facial Minde 
CENT BOOKS AND PAMPHLETS.' 
ENERAL NOTES. 
ek Sic acetate Basic Rocks of Devonshire 
Petro matic c Alteration of Hornblend 
Biotite~ ont of the Little Rocky 
CON TEN Pa. 
-the Retinal 
SCIENTIFIC NEW 
e ee Cells o 
mal Species—The Ter 
tr ‘a 
Entomology. —Antennze of Lepidopte 
ing es of Hymenoptera —Effectiven 
Net in Excluding 
Peach-tree Borer — Smi icon 
y—Oceanic Migration 
Embryology. — Movements of Blastom 
A Mechanieal Sa 
xper on Reinyersi 
age- Birds nests and fost 
Psychic Evolution. ae 
rmal, (Formaldehyde 40 
Microscopy.—Fo 
solu : 
OCEEDINGS OF Sciex TIFIC Socretizs.” 
Psychology. —Ex 
Im 
cent. ution 
eens Post Office as s 
