39 h 
SÉANCE DU 26 JANVIER 1857, 
3° On the grooving and polishing of hard rocks and mine- 
rais by dry sand (from the American Journ. of sc. and arts s 
sec. ser., vol. XX, sept. 1855), in-8, l\ p. 
ll° Description of the fossils and sliells colleçled in Cali- 
fornie i, in-8, 3 h p. ^ Washington, 1855. 
5° From the Proceedings of the Procidence meeting of the 
Amer, assoc. for the adcanc. of science. — Varions abstracts, 
in-8, 12 p. 
6° On the rate of évaporation on the Tnlare lakes of Cali- 
fornia (from the Amer. Journ. of sc. and arts, may 1856), 
in-8, l\ p. 
De la part de M. W. H.Emory, Boundary between the United 
States and Mexico , 1 feuille, grand aigle. 
De la part de M. Fermin Ferrer, Geographical map of the 
Republic of Nicaragua, 1 feuille colombier, 1855. 
De la part de M. W. J. Hamilton, Address délie ered at the 
anniOersary meeting of the geofogical Society of London , on 
the 15 th of febrtiary 1856, in-8, 99 p., Londres, 1856; chez 
Taylor et Francis. 
De la part de M. G. R. B. Horner, Medical topography of 
Brazil and Uruguay , in-8, 296 p., Philadelphia, 18/j5; chez 
Lindsay et Blakiston. 
De la part de M. Isaac Lea, Description of a new mollusk 
from thered sarulstone , near P oit saille , P a. (from the Proceed. 
of the Acad, of nat. sc. of Philadelphia, may 1855), in-8, 
2p.,lpl. 
De la part de M. J. S. Newberry, Description of several new 
généra and species of fossil Fishes , from the carboniferous 
strata of Ohio (from the Proceed. of the Acad, of nat» sc. of 
Philadelphia , april .1856) ; in-8, 5 p. 
De la part de M. le docteur John B. Trask, Report on the 
geology of norihern and Southern California, in-8, 66 p. , 
Sacramento, 1 march 1856. 
Comptes rendus hebd. des séances de l 1 Académie des sciences , 
1857, 1 er sem., t. XLIV, n° 3. 
L’ Institut, 1857, n° 1 203. 
Société!. (P A gîte. , sc. et arts, de V arrondissement de Va - 
