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l VUS THE 
AMERICAN 
NATURALIST 
A MONTHLY JOURNAL 
DEVOTED TO THE NATURAL SCIENCES 
IN THEIR WIDEST SENSE, 
MANAGING 
Profs. E. D. COPE, Philadelphia, AND J. S 
gapi ED 
EDIT 
a iiaa Tufts College, College Hill, Mass. 
ITORS: 
“M 
Dr. C. O. WHITMAN, Chicago, Dr. C, E. BESSEY, Lincoln, Neb. rO rhe ERCER, Rhames Ba 
Pror. C. M. WEED, HEET, N.H., PROF. W S. BAYLEY, W tek ies Maine, Pror. E. A. ANDREWS, Halting / 
PROF, A. C. GILL, Ithaca. PROF. H. C: aei Princeton. ; 
Vol. XXX. JULY, 1896. No. 355 — 
CONTENTS 
Clarence J. Elmore. 520 
(Continued.) 
Mark Baldwin: 
CEE). 
THE CLASSIFICATION OF, DIATOMS (BACILLARI- 
A New FACTOR IN EVOLUTION. 
A 536 
THE PATH OF THE WATER CURRENT IN CucuM- 
BER PLANTS. (Continued.) Ær win F. Smith. 
‘Eprror’s TABLE.—The Spoliatio 
The American Association at Bu 
554 
n of seve 
z 
falo. iea pi 
RECENT LITERAT — Surface Colors — The 
Whence and Whither of Pine Opi on 
? ic Evolut (Ilus- 
t 
trated. )— The 
aoe EM RE on nee casei of ge 
| _ Mar 
~ RECENT Boos | AND PAMPHLETS. 2 ES - 570 
_ GENERAL NOT 
Wins EPA ntact Goniometer with tw 
aduated Circles.—Crystallographic Proper- 
Sulphonic Acid Derivatives of Cam- 
e; 
Ha 
or 
=J 
Or 
' Galena Limestone—Miscellane 
Petrog iy A a e Rocks Tuffs ix 
PAGE 
lee te Gta: Dykes near Lake Memphrem- 
—The Origin of the bashes Granites— 
Potebariutien 1 Notes: 
Geology and Pak saat load dian Palei 
: opo- 
ogy—Jackson on the Hevelopeeate ligo 
rus—American Fossil Cockroaches he = 
manche Cr she ihre its laian Take 
- 579 
ays Argentir 
Tilden’ Ampak Aii saie 
tam bines of North America—Sets of No es 
Am n Plants—Botany in a 
for a Plant Analysis” —Botanical New i 
Zoology —J apanese VENET Orient of g 
Tail- orms The Spermatheca 
can Newts and Salamar ndere- 7 
E hesola Tae Asy 
to Pelyxenus— 
North American Sey w—New MODUN 
—Entomological N 
Em iey ~ Protoplasmie Continnity-—C ell 
Studies in elid Eg 
Psych ae oars Study in Morbid Peschology sy 
with some reflections. (Continued). — 
Aare gy—Mr. Kean on Paleolithic’ ie 
—Cave Cave Kepti by ee RA a 
Peauaybean iain Tennessee. be ustrated.. 
i nd 
’ Prussia—Igneous Rocks of British Columbia— 
k Ciaseions “Ganeretione in Obsidians from 
SCIENTIFIC te Ms ie ue 
PHILADELPHIA, U. S.A 
THE EDWARDS & DOCKER oa 
518 ano 520 MINOR STREET. 
7” 
