760 NATURAL HISTORY MISCELLANY. 
been twenty or more. Early in April, 1860, I — a similar migra- 
tion when the number in sight at one time was about fifty. A friend of 
mine in an adjoining MN who is a very careful ap accurate observer, 
asked me a short time since if I ever saw a flock of hawks? He said 
that early this spring seam about the last of a or the first of April 
when passing over his farm with his two sons, his attention was attracted 
by the screaming of hawks, and on looking up the air seemed to be filled 
with them. ey attempted to count them. but found it somewhat diffi- 
cult to be perfectly accurate, as the birds were constantly in motion, 
diving and screaming and passing northward, yet they counted seventy- 
three in sight at one time. In both of the flights which I witnessed, and 
also in that seen by Mr. S. and his sons, the hawks were not in flocks ac- 
cording to the common acceptation of the word flock, but were in pairs, 
or groups of about four usually, all passing in the same direction, north- 
ward. Having never read in our works on natural history, of suc 
Nes ami passing at one time, I give these facts, hoping to call the atten- 
tion of our ornithologists to them, and draw out from them any observa- 
tions which they have made on the subject. — WM. Woop, M.D., East 
Windsor Hill, Connecticut. 
ScuppEr’s Work ON New ENGLAND BUTTERFLIES. — Illness in my 
family has thus far prevented my completing the work on New England 
Butterflies announced some time since in these columns. "This delay has, 
print enabled me to extend the original plan of the book much more 
fully n was anticipated. 
I gnat take this opportunity of thanking my many friends and corres- 
‘pondents for the"c ordiality with which they have seconded my under- 
se ea When it is known that such memoranda have already been 
arum from ninety different persons, covering a period of observation 
of from one to ten years, and, in the case of some butterflies, including 
as many as one hundred and fifty or two hundred notes for a single spe- 
cies, it is not too much to say that we shall arrive at a degree of exacti- 
tude upon the history, seasons, and riche darioa z our but- 
terflies, which we have not hitherto enjo 
the hope of gaining still tigan nale on these points, I should 
be pleased to receive notes made by any observers during the season of 
1870; descriptions of habits, d of flight and of posture would be 
os 
of incorporating in a work on the butterflies of New England and vicinity 
many forms not mentioned in previous lists of New England species, I 
beg all persons interested to send me the fullest possible notes, as well 
as examples of the early stages of the following species (most of these 
- have — or never been known to occur in oie England; where the 
re italicized, specimens of the imago are desired for examina- 
tion): irns Marcellus, Pieris Virginiensis, P. anii Callidryas Eubule, 
