xs \. 
- $4.00 per Year. $4.60 per Year (Fortign). 35 cts. per Oopy. — 
THE 
; 
; 7 
; A MONTHLY JOURNAL 
| DEVOTED TO THE NATURAL SCIENCES 
! IN THEIR WIDEST SENSE. 
MANAGING EDITORS 
ProF. E. D, COPE, Philadelphia, Pa., and DR. F: C. KENYON, Washington, D. C., 
goreti EDITORS: Ps 
PROF. Ç. M. WEED, Lome, N. H., Dr. C. E. BESSEY, Lincoln, Neb . C MERCER, Philadelphia 
Pror. A. C. aoe aca. ROF. W. s BA YLEY, Waterville, Maine, ProF. É. A. AET Baltix 
Eey C. WARREN, Princeton: RWIN F. SMITH, Washington, D. 
Vol XXXI. FEBRUARY, 1897. 
A 
f; 
4 
ae 
4 
CONTENTS. 
P 
| NOCTURNAL PROTECTIVE COLORATION OF MAM- 
; MALS, BIRDS, FISHES, Insects, ETC Eaton sik Ratón North Aerien Sphagaiee 
Verrill. 99 | The Cell Nucleus—Another Australian Curios- 
5 » THe INFERIOR BOUNDARY OF Ma ; Quat ER it 
Era, r H. Hershey, 104 P ARREA coli not hope Bie 
4 “Tue POCKET, OR PoucHED sikai lium kewense — Egg-Laying in Sagitta > 
Clement L, Webster. 114 | Chætognaths of American Wate aa 
"Protons CEDAR BIRDS. tral American Diplopods—The Developt 
Dr. R. W. Shufeldt 120 | of the Wing-scales and their pi 
THE BACTERIAL Diseases oF PLANTS: A CRITI- Lepidoptera—Rapid Growth of Apus S 
CAL REVIEW OF THE PRESENT STATE OF OUR dachneria—Mautilations of the Oregon 
KNOWLEDGE. (Continued.) Zr win F, Smith. 123 | —On. the Decurrence of the Genus Rei 
_ Eprror’s TasLe—Ori : dontomys in Virginia—I 
‘ BLE—Original Research in the 
2 Universities—Prof. W. Wilson on Science ae “4 ee Pegs a a p 
and the Humanities. . . ote od kee ec etc eae 
i Reep Lrrerarone—Ba iley’s Survival of the ' De toa Dh The eae } 
a nike—Prillieux’s Diseases of Plants— Sphinx Caterpillar So tar Ichneumon 
Campbells Mosses and Ferns. T te ee tack- Viviparoos Rphom E 
~ RECENT BOOKS AND PAMPHLETS 145 . r 
l mga Ne A Embryology—The Corpus Lateam —Creavage ; 
4 GENERAL Norss. iù Ovarian Eggs. ! 
: a ‘aphy—Petrography of the Viterbo Re- Psychology. L Anina Meating bE the American 
gion, Italy—Missourite, a New Leucite Rock— eae LenS Association. 
1 F SCIENTIFIC Sorri 
; The Ciyataliimo Schists of the WT PROCEEDINGS 
X eat —Petrographical Notes. oe . 148 | Screntiric ent R ge ON wc E ee 
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