213 



Revue des Fossils du Gouvcrnmenl de Moscou. Par G. Fischer de 

 Waldheim. 8vo. Moscow, 1842. — From the Author. 



Journal de Pharmacie et de Chimie. Third Scries. Vol. I. No. fi. 

 8vo. Paris, 1842. — From the Editors. 



Journal of the Franklin Institute. Third Series. Vol. IV. No. 3. 

 8vo. Philadelphia, 1842. — From Dr. Patterson. 



Prof. Bache read a paper, entitled " Observations on the 

 Magnetic Dip, made in the United States in 1841, by J. N. 

 Nicollet," which was referred to a Committee. 



Mr. Lea exhibited specimens of rock masses, brought by 

 Lieut. Rich of the U. S. Navy, from Payta in Peru, and from 

 the Bay of Coquimbo in Chili. 



Mr. Lea drew the attention of the Society particularly to the for- 

 mer, which was interesting chiefly from the fact of its tending to il- 

 lustrate the theory of " existing causes." The rock from which this 

 specimen was taken is a compact sandstone, composed of minute 

 grains of quartz, cemented by carbonate of lime, and perforated by 

 Lithodomi or Boring Mollusca, being identical with the species now 

 inhabiting the neighbouring sea coast, and consisting of Petricola so- 

 lida, P. denticulata, Lithophagus dactylus, &c. The included 

 shells are in nearly a perfect state. 



The elevation above the level of the sea from which this specimen 

 was taken, as stated by Lieut. Rich, is nearly two hundred feet, which 

 is remarkable, as the elevation of the coast by the earthquake of 1822, 

 as mentioned by Mrs. Graham, was but a few feet, and that of 1835, 

 as stated by Capt. Fitz Roy, being but about eight feet. 



From the appearance of the specimen there can scarely be a doubt 

 but that it formed part of the shelving shore of the sea in a softer 

 state, into which the Lithodomi made their requisite foramina. 



The second specimen consists chiefly of a single valve of a large 

 Ostrea, probably from the lower tertiary, and remarkable for its 

 great size, its length being about twelve inches, and its breadth eight 

 inches. 



Mr. Kane announced the decease of Mr. Isaac Rand Jack- 

 son, a member of this Society, at Copenhagen, on the 27th of 

 July, at the age of thirty-seven. 



On motion of Mr. S. C. Walker, Mr. Kane was requested to 

 prepare an obituary notice of the deceased. 



