378 NATURAL, HISTORY MISCELLANY. 
frogs have been as active and abundant as during the summer, which fact 
their farther movements to see if, during the coming summe r, they will 
be as indifferent to the proximity of man, and if next winter they will 
also remain in a yard in town. — DR. CHARLES C. ABBO 
F THE SONG-sPaRROW. — Throughout ius winter, and at this 
time (April llth), we are having with us a great abundance of sparrows, 
upon, e 
been one other feature connected with them, that to an ornithologist is 
interesting and equally noticeable, i. e. a marked change of notes or song. 
n 
heard the same bird warble first the old time song and follow immedi- 
saad with the new notes. Giving, as the best illustration of their old 
g, Pres-pres-pres— Pres-by-teee- -rian; we can best show the variation 
ed describing the new as Fee-o, Fee-o, twit-ta, db twit-ta, fee! Hea 
ing these notes, at first, in the one locality (Trenton, N. J.), we fon 
possibly they might have been u gauai by but one individual; but since, 
we have shown this not to be the ca e, by finding the same variations of 
song, in various and widely atc localities. Is such a change of 
notes à common occurrence, in a species having so uniform a song as 
this species is known or supposed to have? ro E HARnLES C. ABBOTT, M. D. 
GEOLOGY. 
GEOLOGICAL ay eno TIONS. eee ex Ha rtt of Cornell Uni- 
the right bank of the Amazon. Another aim of the expedition is to ex- 
plore the coast from Para down to Pernambuco, and investigate the coral 
reefs of this part of the coast. 
About the same date Professor O. C. Marsh, of Yale College led an ex- 
pedition, composed of Students and recent graduates, to the Rocky Moun 
tains, where he will spend several months and collect the vertebrate fociis 
of Nebraska, Dakota, and Wyoming. The party will then go to Cali- 
coast, after which they will return thr ugh Colorado and Kansas, reach- 
ing New Haven probably in Nove abe 
