704 ANSWERS TO CORRESPONDENTS.—BOOKS RECEIVED. 
Proressor Marsn’s exploring party returned to Fort Bridger, 
Wyoming, Sept. 5th, after a most successful trip of six weeks, 
among the Eocene fossils of the Uintah mountain region. Many 
interesting discoveries were made, especially of new mammals, 
birds and reptiles. The party are now at work in Oregon, and 
will return east in December. 
ANSWERS TO CORRESPONDENTS. 
C. M., meno The objects sent are an early and peculiar stage of development of a 
fresh water polyzoon. They are . popalasly labelled “eggs” ot Cristatella, but more 
iiral fa statoblasts or pseud-o H W. 
BOOKS RECEIVED. 
= wh: rlin, 1857 -1866. 
Berliner Entomologischer Zeitschrift. ey! 10, 8yo. 21 pam = e ’ By Baniel 
Sixth ave É ort of the U. S. Geological Survey of the Territories, tions of 
Be sep Bg and Utah; being a report of progress of the year isi. By F. V. 
ayden. eae p. $44. Washington, 18 aeti 
E aum oe the pr aae of Education for the year 1872. Cloth 8vo. pp. 1018. Was 
ton 
roceedings of the Lyceum of Natural History in the city of New York. Second Series. Jan. 3- 
March 3, 1873. 8vo. pp. 32. New Yor m ee New 
Proceedings of the Trustees of the Peabody Educational Fund at their Annual Meeting, 
~~ oe 16, 1573. Svo. pp. 61. Cambridge, 1873. 120 
orological Obse rvations, durin r 1872, in Utah, Idaho and Montana. 8vo. pp. 44+ 
AE o 1873. sto 
A Catalogue of the Shell Bearing Mollusca of Rhode Island, By Horace F. Carpenter. . 
pp. 
‘Circulars of Information of the Bureau of Education. Hos. 1 and2. 8vo. Washington, 1873. 
The Mechanical KRN Heat a Delusion. By A. Arnol Sept., 187 1873 
The Tourmaline. A.C. Hamlin. Cloth 8vo. pp. 107, with 5 colored plates. Boston, alo 
y oe and Thou hts on ae og and the Origin of Species. By C. G. Forshey. 
pp.9 La leans, Femte 
puler em 
pas 1 Report on the New York State Museum of Natural History by the 
nig Sees aise | of Repo State of New York. Cloth 8vo. pp 232. With 8 plates. foie 
‘Annals of the Dudley Observatory. Vol. i. 8vo. pp. 319. Albany, 1866. Vol. fi. Cloth 8v0. 
pp. 567, With 36 diagrams. eet 1871. 
PE este ltsof a Ser lo Meteor: icai 0 ani made under instructions Sag the "RSO to 
g the nie adorei y at sand Siation ms in the S a teoj N ‘New York. | Sec ip rene e pae 
853, inclusive; with gee n-fall and ot henomena,to 1871, inclusive. 
2. 
the original r returns pA Franklin B- H agg a ‘Cloth Ato. a. OE 402, ‘ee Pl i and James D. 
Dina en Am, Jour. Sci,, Vol. xxx, iv, ne 1838.) 8vo. pp. 1 Jà ith 3 te 873. 
parae Science Monthly. New York s keti Jou og ts of; —— ay.. Ang. 1% Mer. 1, 1878. 
; t. 2, 1873. 
mi, Scientifique. Paris, Aug. 2- Sept. 27, Nature. rete tan Ai Je! Quebec, ADE. 
Field. London, July 26- t, 20, 1873. fa 
Land and Water. fn Pes a - Sept. 20. iin ce and Arts. New 
Havens "Sept. a Oatu I 1873. ja, Sept. 
Bulletin g. the 2 orr. Botanical Ciub. New PH Gan — i ener’s Monthly. Philadelphia, $ 
y - de . ta 
The Lens. hiengo, Aug.. 1873. Aa Magazine, London, petty: 
eee of the ntl a Institute. Philadel- 
gy lturist. New York, Oct.. 
pists Monthly Magazine, Lon- Ania or ie L ome i pe pi eire of 
i, Oct. 
