iv Contents. 
EDITOR’S TABLE 
The Phi lade a gassed 38, 11 7; The tariff on spe cimens,.apparatus and books necessary 
i f Edt e Phila 
a, Go 
654; Biology at the American Association at Boston, 725; Obligations of Educational and Chari- 
table Institutions, 793; The Metric System, 881 ; The Permanent Exhibition of Philadelphia, 881. 
RECENT LITERATURE. 
Paro Survey of Canada; 42; arias Shell Mounds of Ti 43; Growth as a oe 
of Cells, 44; Williamson’s Fern Etch 45; Recent Books and Pamphlets, 46; Notes on New 
England Is sopoda, 120; Gacik Pahi of Paul Mayer, 121; Herrick’s Tatia I21; 
The Mi 
cific paaa ek 281; Barrande’s TAa s rip caps 282 5 re on the Crayfish, 282; 
Thomas’s Noxious Insects of Illinois, 283 ; on the Cot , 283; Gilbert’s Geology of 
the Henry’mountains, ar a tracholog Hy pid 286; meir Contributions, 287 ; The 
Annual Report of the E or 1877; 360 ; hatin Books:and Pamphlets, sei Smith’s 
Braz il; The ceases akt —— cast, 436; ‘Natural Science a sata 436; prera d 
Book of Field hae 438 ; Sketches of the Physical phy and of Nebraska, 
439; omparative Medicine and Surge uair on Peyi, 439; 
Recent ks phlets, 441; The Geol of Wisconsin, 508; ley on the Crus- 
tacea belonging to Union College, 509; Crosby’s Geolo: f Eastern Massachusetts, ; 
Bı velop: t of t ster, 510 ; Thomas’s Chincth Bug, 511; ‘The Geological Record, 
511; The Midland Naturalist, 512 ocky Mountain Health Resorts, 512; Proceedings of the 
venport Academy of iences, 512; Hayden’s Great West, 513; Verrill’s Cephalopods 
of Northeastern America, oe Recent Books and Pamphlets, 514; Packard’s Zodlogy, 582; 
orph 
Studies a kos M ologica b Eeboistory i in the University of Cambridge, 584; The Hessian 
Fly, 586; A New Gei Geog ł Journal, 588; Favre’ sonha Ce of Geren 
ithe a Books and Priaphiets; 588; cao Recent Publications on Japa: Archeology, 
656; Balfour’s Comparative Embryo logy, 6 ; The Odom ornithes, or Birds: ‘with Teeth; 6s ; 
for 1879, 665; Recent Books and Panghls, 667; Nell’s New-Map of Colorado; 728; H Haeckel’s 
System of Medusze, 729; Recent Books and Pamphlets, 730; Bessey’s Botany, 796; Huxley’s 
Introductory to Science Primers, 797 ; carota s Seaside Collecting, 798; Zittel’s Paleontology, 
793; ee ee ects of Russia,-799; Miss Omerod’s English Injurious Insects, 799 , 
White’s Contributions to Paleontology, 800; The Aborigines of Victoria, 800; Recent Books 
and eggs Sor; = Phe Tarsus and Carpus of Birds, 882; A Manual of the Infusoria, 883 ; 
Packard’s second edition, 884; Daubree’s Chemical Geology, 885; Hertwig’s Che- 
tognath Worms 885; Wadsworth’s hg te toc, pe AARS and -Geological Results of 
the French Expedition to observe the Transit of i Sigsbee’s Deep Sea Sounding and 
Dredging, 887; Recent Books and ea 
GeneraL NoTES. 
Beary SPE entrapped by an Asclepiad Plant (Physianthus) and killed by Honey eae 
cal 
Birds, 126; Connection of the Rainfall with Forests, 127; The New Mexican Locust Tree, etc., 
127; coer abet»: pid the iene 128; Botanical Notes, 128: Sexual Differentiation in 
Epigea > The Agency of Insects in Fertilization, 201; The Function of A T 
204; The Humble vat a Dyrteedlgie ‘among Alp in e Flower Visit tors, 288 ; Botanical l Notes, 291 
Destroyers , 363: Twining Planes, nts, 364: The Germ ‘Disease Theory , 364; Botani cal News, 365 
Transformation of Anthers into Overs, 442; Additions toa Historical Sketch of Botany, 443 
The Fly-trap, its. First Discovery, 443; Arenaria groenlandica near Middletown, Conn., 444; Bo- 
tanical Notes, 444; Effects of Uninterrupted TAP Plants, 516; Destruction of Tneechs ts by 
Fungi, 516; The Origin and Survival of the Types of Flowers, 517; Botanical Notes, 5177 
Changes in Plant Life on the San Francisco Peninsula, 589; Botanical Notes, 592; Contrivances 
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