1876.] Summer Birds of the White Mountain Region. T5 
The plate devoted to the segmentation of the bony fish is par- 
ticularly important, as it gives us a totally different interpretation 
of the formation of the embryo from the one usually accepted. 
Haeckel’s observations were made on the pelagic eggs of what he 
ealls a Gadoid. Judging from closely allied eggs we have had the 
opportunity to study on our coast, we should say they were more 
probably Cottoid eggs. 
It may not be out of place to call attention to the great abun- 
dance of pelagic fish eggs readily obtained, in all stages of devel- 
opment, during the breeding season of a number of our common 
marine fishes. With the exception of the very earliest stages of 
segmentation, only to be obtained, owing to the rapidity of the 
process, by means of artificial fecundation, I know of no method 
so readily accessible for studying the embryology of fishes as 
that of collecting pelagic fish eggs. I have myself studied more 
or less completely the embryology of our sea-perch, tautog, two 
species of sculpins, two species of flounders, a Motella (young 
Phycis ?), our blue-fish, menhaden, butter-fish, goose-fish, and 
several other species of uncertain origin. These pelagic eggs are 
by no means as delicate as eggs usually laid on the ground and 
obtained by ordinary artificial fecundation, and the young em- 
bryos can generally after hatching be retained alive for a consid- 
erable period. 
THE SUMMER BIRDS OF THE WHITE MOUNTAIN 
REGION, 
BY H. D. MINOT. 
Sin this article I mean to speak of the birds found in summer 
*~™ in the region of the White Mountains, I may state that my 
information in regard to them has been drawn from observations 
made at Conway and Bethlehem. At North Conway, where I 
spent several weeks in the year 1872, I observed, through what- 
ever part of the neighboring country I went, an almost entire 
absence of birds. That township, owing to its situation in a val- 
ley to the south of the White Mountains, and other causes perhaps, 
contained, to my knowledge, few birds beside the ruffed grouse, 
afew ducks in the rivers, sandpipers, one pair of hawks, one pair 
of kingfishers, a few robins, and the proverbial village swallows. 
But Bethlehem, the highest village of New England, sixteen hun- 
dred feet above the level of the sea, blessed with a cool, invigor- 
ating climate, situated to the westward of Mount Washington, 
