l 
256 EXCHANGES. —BOOKS RECEIVED. 
The following are the names of the officers for the ensuing yee 
President, J. Lawrence Smith; Vice Presidents, Noble Butler, 
Chas. F. Carpenter ; Treasurer, C.T: F. Allen; Cor. Sec’y, E: S 
Crosier; Secretary, John Williamson; Executive Committee. 
Thos. E. Jenkins, James Knapp, W. T. Beach, E R Palner 
R. C. Gwathmey. 
Tae Maryland Academy of Sciences have recently built a nev 
hall for a museum 30X70 feet, by 20 feet high. It is ‘proposed to 
arrange in it a biological collection.of the objects chiefly rep 
sentative of the regions of which Maryland forms a part. 
EXCHANGES. 
_ Slides of Diatoms arranged in groups, agree for other mounted microscopic 
specimens ER, Gree r Co. 
£ BOOKS RECEIVED. 
Badari for Populære Fremstillinger af Naturvidenskaben. 8vo, Vol. v, Part 1. 
h 
Pro očeedings Philadelphia Academy of Natural Sciences, 8vo, sig. 27, 1873. 
New Equine Mammals iran e Tertiary Formation. Pir 3. Marsh. 
roe ae. 1874. pvo, pp. 12, (From Am, Jour. Bc and gre Jol. vii, March, 1874.) : 
Reports on the Geological Survey of t the S uri. 1855-1871. 8v0, pp. 823. 
Maps, plates and woodcuts, AEE ues eee 
Geological Survey of Missouri, Preliminary Report on the Iron Ores and Coal ENR! 
«a Fieid Work of 1872. 8vo, pp. 655. 190 istrations in ‘ond text and an atlas. New Y: ph 
hoe 
1-12, Dee. 1871- Nov. E72. Vol, v, Nos. 1-6, Dee. 1872 ~ May ete Ups a. 
eas ee Regiæ Societatis Scientarum Upsaliensis. 4to, Series 3, aa viii, pepe 
ps 7 
P Memoires de fond sere iar T Physique et X Histoire Naturelle de Geneve. 4to, Tome xxii 
enir Entomotogiacher Zeitschrifi. 8vo, Jahrgang 17. Pts. land 2. Berlin, 1873. 
Hons of the Imperial Botanical Garden of St. Petersburg, 8v0, Tome ii, 
Potecaare, 187: 
OR agg ee — ag Naturwissenschaften Gesellschaft zu Chemnitz. 8vo. Jan.1, 1871- 
bee 
ar Vornandiungen d des ei San Led = ee ussischen Rheinlande und Westph 
0, rgang art Bonn. y 
pa ea agina ie plibg i iah henden Gesellschaft in Emden. 8V0+ 
Butletin de la Soctete des Sciences Naturelles de Neuchatel. Tome ix, Part iii, 8V0, 
ain 1873.. 
ulletin de la Societe Imperiale des Naturalistes de Moscou, 8v0, Plates 3-6. No. 
‘ W. 
px itzungsberic r Katsertic kastele haften. 8y vo, Band lxvi, P: 
A Hone 1-5, we givens ERT en 6 Cart 3: tet Hefte 1- 3/1873. T pie 
a — onary, of of fievati on fae Guimatte te Reiter of i of the United. States. .By J. M. Tol 
» Pp.: i ostran u F 
NeT i of Zoology. By iael Pasig Wmv, oy 172, ~G, P. Putnam’s Sons, Pu 
New « 
vie srn, the Fossil Remains of the Lower Carboniferous Limestone Exposed at Gre 
fa A. Strong. ,8vo, PP. 6, No.3 of tines Hlaneous Papers of the $ 
a ere 7 eicorological Observations made during the year 1871, at the 
J 984. Washington. 1873. with 
diz, uai Report of the Secretary of the Mass. Board of Agriculture, © 
; hee 0 ale included in some Minerals. Two papers, wil with» on 
= j onidæ, ete. tnaper, By Is anc Lea, 8V0, 
€ Aas i ima os 
Htaliana, Anno Quinto. Trimestre ae Bro. 
