a 
CONTENTS. 
Observations upon the Habits, Structure and _and Developmen of 
Amphioxus pera a at ae eh cae a iy or GT eee ea Henry di BCE ini eK SD 1, 73 
Sketch of North American Ornithology in1879........-. Eliott COMO. ss x0 nt 20 
Historical a a the Satis of Bo cna in ipsa Am 
from 1840 to 1858, (Co aoe from p. 771 Vol. xu). . . > Frederick Brendel . xy OS 
A Sketch of syne ge ve Em japa (I.—The ace of the 
Genoblasts, and the oy f Sets puis enaa Charles Sedgwick Minot... 96 
The Convolution of the Trachea in the Sandhill and se 
et pe eee eae E . Thomas S. Roberts u.s . 108 
The Perici Of Moina s sisca esate ace ee g S Si wg rege sia) 10g 
The Proboscis of the Houseg: . < a e. 6c als 3 6 be ee G. Macloikit se o oo o eo 153 
Sketch of Progress in Mam malari in ika United States in 1879 . Elliott Coues s.. + + + + + 161 
Review of the Modern Doctrine of Evolution.. . . . . eure Me De COPE s s 0 a 20-0800 ROO 
Concerning Amber. i Spo «40k 6 jhe ee . » Erminnie A. Smit PIE TE | 
Protoplasmic Dyna W S Barni. aane + 233 
A Sketch of Comparative Embryology. “dL. —Fentlzation of the 
Ovum, III, ) Charles Sedgwick Minot. . . 242 
Progress of Invertebrate TURAT in the United States for 
the year 1879.. >. 6 gin) oso As a R C. A. White...» 50 
The Toneoe of the ‘Hea Be sa wa ee ae ee ee aes erR I 
The Structure and pira of a Buttery’ Trunk senansa 2 AAA Burgers. 5-6-6 65° 353 
The Critics of Evolutia: ¢ sag ss ie s © Sue LAPIN» a oy 319, 398 
Hall’s Second Arctic Expedition. . . . . e ees sess- Ellis Hornor Yarnall 
Sketch of North American Anthropology in 1879 > > > s >.. T. Mason ` 
Otis 348 
The Domestication of Certain Ruminants and Aquatic Birds. . , A. £. Brown and x D. Caton = 
The Supposed Dimorphism of Lithospermum longiflorum . . . . C, E. Bessey... + - 
Notice of some Aquatic Worms of the Family Naides. . . . Joseph Leidy ses...» s 
American Work in the Department of Recent Mollusca paein 
akae. + aie a A A A . . William H. Dall >.. i» 4% 
The ee Agricultu tal Fertilizers oe JEPEN Indians and _ as 
the Early English Colonists. . . esr a G Bmw GONE oi 6.9 oe ae 
A ae of Comparative re av. —The Embryology 
Se AREE E Dets wate A . . + « « Charles Sedgwick Minot. . , 479 NES 
“tint of the Micke ot Gs Wine Oregon Spas oh 6 O Ee FRM 6 6 Oa 
A Botanist in Southern California... .. +--+ . o + Joseph F. James +++ 
ean Anns CEE Mite. a ie ee 
The Structure of the Eye of Trilobites......+-++++> AS Pacer, Yr...» 503 
The Fabrication of Aino Cloth . RES ae ea . » D, P. Penhallow n.a». ax 55 
English Birds compared with American... . e +++ +++: B.D Moa. Se 
On the Age of the Laramie Peres as x diaii by its Vege- 
table Remains... ... Pasian Sh nS 30% aE "Y, Starkie Gar Cn ee 565 
Notes on the FI ering of fraga sar ri ES AE B 
w Saxi tosa roe 7. T : oP eed f 
Destruction of Obnoxious Insects by means of Fungoid Growths. A. N. Prentiss . « . + «575, $30- 
The Siphonophores, (I.—The poni and Development of ken. 
Pansi anaa TE FE eger pi aa A ur OIA A 
Do Flying Fish Fly? Pee enn ie ye ae ee ae ee En = Pee Sag gay ae | Pag ae € O ROR ee 
= e Food of the Darters... .. - SA. Forbesss vn ess i 
n the ery Extent of t Triassic Formations a the Atlantic eis 
: he lps Rana + = PA 
. Chas. C. 
Stat 6% . 
Notes api alenen Ponni in N * jei sowie tne eee TE 
i crash Binds ae i ‘ oe : ee ee Sarnaak Ar di 75 
l ined i Pine aE eS WOR. Hlg... 720,776 
The Island Ai Daa N aan. OS AM ea SS I 
The Sand-hill Crane.. i, an 0 ee PN O KD. Cate on eet 3 
the Origin of the Lac. ee Se he ale 9. M. Stillman... +. - 72 
Botanizing on the Colorado Desert... e+e eet shes a + 87 
On the reame Cats of America I PE A A es ar 
Twin lakes pe 1 Colorado, 
be al Phenomena of that region. . ss’. = + yden r si 
A Sketch of te Siew of Botany in the U, S. in the year 1879. C. Æ. Bessey +++ +++ - 
re of Embryology. (V.—The eee ooo 
p 
A Sketch , 
of Development)... eee 2-5-2 -+> 
