194 ANSWERS TO CORRESPONDENTS, ETC. 
taking has not proved a financial success. The new association, 
which includes, we understand, all the leading zoologists of Eng- 
land, hopes to have better luck, and in a few days it is expected 
that its programme will be before the world. Mr. Seain 
F.R.S., is the Secretary. 
ANSWERS TO CORRESPONDENTS. 
C. E. B., Iowa State Agricultural College, Ames. — The worms you found on the apple 
tree are probably those of the oe moth, and the lest os to my - to den them 
all off the and look under the bark for others. The wings hese 
cocoons ce "easily found after a little experience, and the ol deel o 
spring is the best time to look over the trees for the cocoons of ron and other moi s 
so to remove the bunches of eggs of the paenan Tent Caterpillar, and the Canker > 
jat oni if you have the e ay caterpillar in low 
e larve which you —“‘ were exceedingly abundant on cabbages last season 
du Sea wet the hotter portions. ‘and phen ogy on the kapir bep A thon in ce holes, 
gs spoiling their fl pd wth, the crop; an rm on i under side 
of the leaves, or on shaded portions sor the Ae js Juries ‘ace, comeing D little € ti 
the caterpillars of “og Aas A Tin nea (T. tella). It also ory th : 
common all over durop aiba are two broods, o 
the end of summer. ° The lary “ye spindl e-shaped, and of a delicate é green e iaai i 
gray head. We have found the larva on cab age leaves late in September. W 
give a farther roau id fo caterpillar on another occasion 
— The mouse you say is common at the house | 
mountain is, erea aranin Gapperi, hup praos description’ oe full enough to 
sure. Specimens would be very acceptabl 
BOOKS RECEIVED. ; 
merica n Journal seg onchology. Vol. 6. Parta. Philadelphia. March, 1871. Hin- 
The School Physical ag Vol.1, No.1. March, 1871. | Professor G. 
richs, Baot. lows Uhl, owa. $1.00 a year. 
Bulletin de la Societe Zoologique we Acclimatation. Mome vil, Nos. 8,9, 10. Aug-Dee. 187 
Revue des des Cours Scientifiques de la France et de? Etranger. Nos. 42-50. Sept. 1s70-Marel, 
T Pisiosophical Transactions of the Royal Society for the year 1869. Vol. 159. Part 2. sto. 
o 
med ad Fellows of the Royal Society, Nov., 1869. 4to. London. : 
Proceedings of the Royal Society.’ June 17, 1869-Mareh 24, 1870. Vol. xviii. "a 
Proceedings Royal Society, Edinb ER 1869-70. Vol, vii. No.80. 8v0. part. 
ee the Nova Scotian Institute of Natural Science. Vol. il. 
ve 
% Orleans County Society of Natural Sciences. 
poe pee Energy A, At oe etait 
of the Trustees of the Free Public Library of New 2 on, 
ifie Review. Vol. ii. Nos.1-2. 8vo. Bruns 
"aa Torrey. Botanical chu, Vol. ii. ao, ® arch, eM Seo. New rior 
rita to eNi ectly Known Forms among the Brachiopoda, etc. nee 
Orie jin of Species. ew Theory. N. Y: 
Proe prd Bi y Pet kt K4 Pako Ra ae ype ore eean o., 3. Sepi pa 
Celebration of the Humboldt Centennial and Opening of the Iowa Tnatitute of Si jce 
E 
ly Meeti (1869 of the Iowa Institute o Scie nd Arts, Newspaper slip. Dubi 
è i Pyramia of Jizeh. The Plan tad Object of its Coah u. Pivo gma 
the Commissioners a of O the State of New York. 8yo, Albany 
American Journ Asad Se oe shag a r. Vol. Li Do4 April, „187. 39 
ature 
Land and Water. Eondon Hos for Mare ular Science Review, London. 
The Field. London. Nos. for March, sy Popian Scie London. March and AP 
