N MAT Nerve te Ws rer 
/^4.00 per Year. 
AMERICAN : 
NATURALIST | 
A MONTHLY JOURNAL 
DEVOTED TO THE NATURAL SCIENCES ee 
IN THEIR WIDEST SENSE. n 
Sty 
Vol. XXIV. 
JULY, 1890. 
No. 283 = 
PAGE 
(5 ro 4. Cope, 599 
Y OF THE VERTEBRATE 
rdes-Sedgwick Minot, 617 
THE CETACEA [Illustrated], . 
"THE CONCRESCENCE THEOR 
Fi EMBRYO [Illustrated], . Cha 
HISTORY OF GARDEN VEGETABLES, 
E. L, Sturtevant, 629 
as AMERICAN TERRESTRIAL LEECH, S. A. Forbes, 646 
i RECENT ves ANB PAMPHERIS, - € OD 
GENERAL 
po Hee “Travel. —Asia: The Great Central 
egions— Australasia and FA : 
Africa 
uin 
Ascent of Kilima-njaro—Lake Leonia: e qd E 
Geology and Paleontology. —The Origin of Petroleum 
Gas—Producti on of Salt in the United States— 
ay ral; Paleozoic; Mesozoic; 
Wow ae 
EEE " * - * 
CONTENTS. 
‘any.—Some Elementary Botanies—The Come 
tion dem Saccardo's Sylloge Fungorum—The Prepara- 
= of Vegetable Tissues for Sectioning on the Micro- 
ome,  . .2 V M ee ol. e e EUR ; 
Zoology.—The Ontogeny of Limulus—A Review of | > 
Some of the North American Ground dar; ofthe — 
Genus Tamias, . . . . Eke s . 678 
Ph Z, TL > cat... adi c. RU ox 5 
Lhystotogy : s 
ee ^12... o9. ee 
Entomology kH Spid [1H il : 
— The Live Oak ee of Ecomo- . 
mic Embryology—Entom en 
Careia and T the Use of the 
nograph Among the Zuñi I er; 
PROCEEDINGS OF SCIENTIFIC SOCIETIES, . Pd E 
SCIENTIFIC: NEWS, . . zes en, 
PHILADELPHIA: 
EERRIS BROS., PUBLISHERS 
SIXTH AND ARCH STREETS 
