PUBLICATIONS RECEIVED. 
(Regular exchanges are not included.) 
Avis, K.C. A Taxonomic Study of North-American gp mm Ithaca (?), 
6 P. E 
Seid by the author. 36 pp.— CROSSMANN, . Elemente der empiri- 
schen necs Sec A. Zimmer, 1899. 8vo, 132 pp. 4 marks. — GREG- 
EV, W. logue of the Fossil p oed in the Department of Geology, 
British "E NS Cretaceous Bryozoa. Vol.i. London, 1899. 8vo, xiv + 
457 pp. 17 pls. and 64 text-figs. 16/.— HILL, ALEX. Introduction to Science. 
Temple Primer Series. London, Macmillan & Co., 1900. 8vo, 140 pp., I portrait. 
— JÖRGENSEN, A. Micro-Organisms and f'érinss M. Translated by Alex. 
Macmillan & Co., 1900.  8vo, xiii + 313 pp., 83 figs. pen WILSON, E B. The 
it 
New York, The Macmillan Company, 1900. 8vo, xxi + 433 pp» 194 figs. iae. 
CHITTENDEN, F. H. ome Insects Injurious to Garden Crops. United 
States Department of Agriculture, Division of Entomology. Bulletin No. 23. 
92 pp. — CoourLLET, D. W. Report on a follacHon of Dipterous Insects from 
Puerto Rico. Proc. U. S. Nat. Mus. Vol.x ii. pp. 249-270. — Hay, O. P. Descrip- 
tions of Some Vertebrates of the Cobain Age. Proc. Amer. Phil. Soc. 
Vol. xxxix, No. 161, pp. 96-123. — Morse, E. S. A Bubble-Blowing Insect. 
Popular Science Monthly, p. 23. May, 1900. — RATHBUN, M. J. The prt 
Crustaceans of West Africa. Proc. U. S. Nat. Mus. Vol. xxii, pp. 271- 
merican Muse ournal. Vol. i No. 1. April. — Bulletin dos cni m 
Society of Philadelphia. Vol. ii, No. s. March. — Bidletin of the Johns Hopkins 
Hospital. Vol. xi, Nos. 109, 110. April and May. — Bulletin of the Natural His- 
tory Society of New Brunswick. Vol. iv, No. 18, Pt. iii. 1899. — The Forester. 
ol. vi, No. 5. May.— Zhe Insect World. Vol. iv, No. 4. April. — Hsia 
of the Rochester Academy of Science. Vol. iii, Pt. ii, pp. 151-230. March. 
Revista Chilena de Historia Natu wt Ano iv, Nos. 2-3. February and March. 
— Science Gossip. New Series. Vol. vi, No. 72. ee —Johns Hopkins Hospi- 
tal Reports, vol. vii, Nos. 5-7, contains Biéodgbod, J C., Operation on 459 Cases 
of Hernia, etc., pp- 224-567, plates. — Wisconsin Geological and Natural-History 
Survey, Bulletin Nos. 5-6, contains Grant, U. S., Preliminary Report on the 
Copper-Bearing Rocks of Douglas County, Wis., 55 pp. and Salisbury, R. D., 
and Atwood, W. W., The Geography of the Region about Devil’s Lake and the 
Dalles of the Wisconsin, 151 pp., plates. 
(No. go2 was mailed June 21.) 
