A MONTHLY JOURNAL 
DEVOTED TO THE NATURAL SCIENCES | 
IN THEIR WIDEST SENSE. ee 
Vol. XXIV. OCTOBER, 1890. Ww 
CONTENTS. 
PAGE | PAGE 
THE MESODERM AND THE C(ELOM OF VERTE- | Botany. zen at the pre ti se ges 
-BRATES [Illustrat ed],. . Charles Sedgwick Minot, 877 Zoliis — Heb i 
il Limo Mid ED xus ad ep piv Protonca- Note on iue ue Glue pend 
= mens 
s HARVEST ADS. OF p tins AMER gen A : tharia— Ácan Acanthoce- 
An Titfllustrated], . Clarence M. Weed, 914 remus up nin ge 
- —Limitation in Fe o —Ento- Ilustrated IA New eof: Cheiys 
EDITORIAL. Limit Sois Meeting of A. A. A-S.—New —Snakes i m Ba Weg 
York's Electric Execution TE ex a ANE Bde Toni N eem eret e 
: Pav cop eR ros MET gest me at a eig Ci a 
oe a PAMPHLETS, en a eint ib hota T ron i 
Dalles Dynamic Influences in rolton oen Pyychology.— Jastrow on a Writing Test, . . .. . 973 
-on the Colors of Animals—Billet on the Life History Anthropology and Prehistoric Archeolo, 
en orals and Coral id. een 924 American Association fo ae Ad 
vancement of Science, at Indiesapolis ee 
b d Travel —hHonduras, .. . . . - - Micros nstration of the EL, * 
Paleontology —The Barking Sands of —Caryokinetic id gta edi n of the Nucleus 
o New Species of —Spermatogenesis in the Hermaphrodite Gland - ef 
the Loup Fork Miocene of Nebraska Limax agrestis—Conjugation in the Infusoria, . . . m 
— Macfarlane's ican cal Rai siut. hacer PROCEEDINGS OF SCIENTIFIC SOCIETIES. — The 
—A Sueca dne p =. ish Fossil ertebrata— American Committee of the I — Congress _ 
ew Zealand—A Bison at Syra- of Geologists... - - > + - 987 
cuse, Sen, ek Geographical News: P: Paleozoic ; E gm o es 
PHILADELPHIA: 
_ FERRIS BROS., PUBLISHERS 
SIXTH. AND ARCH STREETS. 
