AMERICAN 
NATURALIS 
A MONTHLY JOURNAL 
DEVOTED TO THE NATURAL SCIENCES 
IN THEIR WIDEST SENSE. 
MANAGING EDIT 
Props. E. D, COPE, geh noie. ag KINGSL EY, Boston. 
N pocciate ED! edat 
~ Dr. C. O: WHITMAN, Chicago, . E. incoln, Neb., THOMAS WILSON, Washington, 
‘Pror. C. M. WEED, Durham, N. H., . W, S. nie Water ville, Mine, Pror; E. A. AN DREWS, Baltimore, 
13 o W. N. LOCKINGTON, Rugby, England. 
No. 323 
NOVEMBER, 1893. 
CONTENTS. 
Pi 
THE GENERA OF THÉ DIPNOI DIPNEUMONES. of. the Clad Puce Sharks — Geological News.— | Be 
foward Ayers 919 | Paleozoic—Mesozoic—Cenozoic. i 
vir; Jr. 983 Mud. ies Pares feat 
a Pru FROM ug rm ages pude ^ pis T 
Sakon pra ce Louisiana, AND SON e tangy ipd DE 
County, TEXAS. . 1, Wayland Vossius: 944 Onlin Conglomerate of Ver 
ages Grayk SPECIMENS CoM- other us: Spheruli 
‘QUARRY REFUSE IN News Danalie f from Redruth, Corm 
e lite Changed to Thenardite— Mineralogical News ews— 
Batany. —Kuntze’s Revisio Generum Planar, 
: Ex IH 
exa vides nun 
,—How Young Wiokeis atc Polk Fatti 
‘Theory of Dental Evolution 
on € 
S AND P4 Tren; 
TERA ATURE. — Iowa Ceplogical Survey 
ion Papers The Newa rk. System — 
Accli l 
— The Androchonia 
j am -Hehy Cecidemyia Ei miss 
Geological Survey, 1889-90. P: | Atriple s—Trichodactylus 
Report o ~~ Death een tspedhions es As ya nia 
3 EX TR Arkeo? ea nie Tie Men 
Laurentian v. the Delaware Valley — 
Lb O! 
-of Pre-Historic A 
Micros. pM d 
: OCEEDINGS OF 
| Scimxtiric News. | 
