U. S. Ent. Comm., 1883, [6 March, 1884], pp. [39]-[40].
See Part 3, No. 2267, p. 322.
270. Coles, Isaac. Cutworms in corn. <Conntry Gentleman, v. 37,

May, 1872, p. 339.
Ravages of Eadena arcticat

271. Collamore, Horace. Borers. Soapsuds and sulphur to kill.
<Mass. Ploughman, 21 March, 1846, v. 5.
Means against borers in apple trees.
272. CoLMAN, A. E. Premium essay on the diseases of swine.
<Trans. Dept. Agric, State of Illinois for 1877, 1878, v. 16,
pp. 323-350, 6 figs.
Treats of scabies caused by Sarcojptea suia; figures the species.
273. CoMSTOCK, John Henby. [Retinise injurious to pine trees.]

<Can. Ent., September, 1879, v. 11, p. 176.
Food habits of Betinia frnstrana and B. rigidana.
274. CoMSTOCK, J. H. On a new predaceous lepidopterous insect.
<]Nr. Amer. Ent., October, 1879, v. 1, pp. 25-29, pi. 4.
Life-history of Dakruma (=L(Btilia) coccidivora,

275. CoMSTOCK, J. H. [Colorado potato beetle in Manitoba.] <Can.
Ent., October, 1879, v. 11, p. 196.
Manitoba the most northern habitat of Doryphora decenilineata in 1879.
276. COMSTOCK, J. H. [Yeast as an insect destroyer.] <Can. Ent.,

November, 1879, v. 11, p. 204.
LarvsB fed on leaves dipped in yeaut were not destroyed.
277. COMSTOCK, J. H. Eeport upon cotton insects, prepared under

the direction of the Commissioner of Agriculture in pursuance
of an act of Congress approved June 19, 1878. <Washington,
1879 (18 May, 1880), 5 + 511 pp., 3 pi., 76 figs. Abstract : < Ann.
Eept. [U. S.] Commissioner Agric. for 1879, pp. 262-347. Notice :
<Eural New Yorker, 6 June, 1880, v. 39, p. 270. <Western
Stock Journal and Farmer, July, 1880, v. 10, p. 153.
TABLE OF CONTENTS.
Letter to the Commissioner 3

Part I.
