March, 1887. 
Vol. XXI., No, 
THE 
AMERICA 
NATURALI 
A MONTHLY JOURNAL 
DEVOTED TO THE NATURAL SCIENCES 
IN THEIR WIDEST SENSE. 
3- 
Single Numbers, 35 Cents. 
Yearly Subscription, $4.00. 
CONTENTS: 
wight, 1887, by J. B. Lippincott Company. 
J. B. LIPPINCOTT COMPANY, PHILADELPHIA. 
London: tc Henrietta Street, Covent Garden. 
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PAGE PA 
THE MASSASAUGA AND ITS HABITS. O. P, Hay. 211 —Voleanic Bombs.— 
IN ae 
THE SIGNIFICANCE OF SEX (concluded). [Ellus< revpeain asses Tasei mo i 
Hated.) Juus Melon. -o -G p n oo e y.—The Study of Plant Diseases.— Vege- 
THE TACONIC QUESTION RESTATED (continued). ubie ‘Pato a ee ee . 
E ere OA se 38 Entomology.—Hauser on the Organs of Smell in 
Insects tia shake Se Se ini 
NOTES ON THE GLACIATION OF THE PACIFIC 
Coast. G. Frederick Wri ree 5 so Zoology.— Note the Larger Florida Plan- 
NOTES ON THE LIFE-HISTORY OF Monachus tropi- — a boa Introduced or Indige- 
calis, THE WEST INDIAN SEAL. Ottustrated.) 1] mons Development ot Alphens — Den Ser tee 
Henry L. Ward . 257 da.—Molluses of Lake Tanganyka,—Echinoderm 
Morphology.— Nettle-Cells ripe ae e 
EDITORS) TAB Indi Birds.—Zoological Nev P eee 
The Use of FET Names for Fungi 264 a : oe : 
Simonrtation of Rabbits from Australia . pe Eméryology.— Haddon's Introduction to the Study 
is of Embryology.—Development of Mysis.—Develop- 
RECENT LITERATURE. ment of Spiders.. 1. . 298 
Physiology of Plants >. >. 266 ' 
Tans BY AAT wae he ga of Consciousness. Re Ea 
es NOTES. “n 
and Palgzontology.—A Landslide at Brant- ei a Ana fe . 
at SRPA B ok 3 ee 
ford, reg psa the — of dees upon Ryder’s Automatic Microtome [PMustrat ar. = 
Wielding Stra gara a 
PE OE ; het : CIE WEIPIC NEWS -n na nn O + goa 
> ie basslines of Canaan, Columbia County, N. Y.. . 267 | PROCEEDINGS OF SCIENTIFIC SOCIETIES. .. 305. 
