vi CONTENTS. 
Page. 
XIII. Abstract of the Proceedings of the Eleventh Meeting 
of the British Association for the Advancement of Sci- @ : 
ence, held at Plymouth, September, 1841, _- -, 317 Aaa 
XIV. An Astronomical Machine, the Tellurium; by Epwin 
C. Leepom, M.D., - - - - 338 
XV. Abstract of a Meteorological Journal, for the year 1841, 
kept at Marietta, Ohio; by S. P. Hitprer#, M.D., - 344 
XVI. The Glacial Theory of Prof. saad ie CHARLES 
MAcLAREN, - - 46 @ 
XVII. On a New Species of ‘Trilobite of very uae SIZE ; = 4. 
Prof. Joun Locke, M. D., - - 366- | 
XVIII. Register of the Thermometer from 1830 to 1839, ken igh ae 
at Boston, Mass.; by J.P. Hatt, — - 368 
XIX. Chemical isetibnciein of Bituminous Coal = the pits 
of the Mid Lothian Coal Mining Company, south side 
of James River, fourteen miles from Richmond, Vir- 
ginia, in Chesterfield County ; by Prof. B. Sinziman 
and Prof. O. P. Hurgarp, - 369 
XX. Bibliographical notices :—Linnzus’s Bolan Writings — 
jig Index to De Candolle’s Prodromus, 375.—Kunth, Enu-— <4 
. << meratio Plantarum : Loudon’s Arboretum et Fruticetum Se | 
Britannicum, 376, —Steudel’s Nomenclator Botanicus : 4 
Torrey and Gray’s Flora of North America: Mr. Nut- 
tall’s Edition of Michaux’s Sylva Americana: Bo‘ani- 
cal Teacher, 377.—Agassiz’s Monograph of the Echi- 
nodermata, 878.—Boston Journal of Natural History, 
379.—Harris’s Report on the Insects of Massachussetts, 
injurious to Vegetation : Rogers’ 's Letters on the Man- q 
ufacture of as 380. : | 
Miscetranies.—Protest of Mr. Charles V. Walker, 383.—Min- Es 
eralogical Notices, 386.—Infusorial Animals: Coal Mines i mii 
~ Cuba, 388.—Encouragement for the Fine Arts: Geological’ ae 
Survey of Louisiana, 390.—Preparation of Freshwater Shells 
for the Cabinet, 391.—Bones of the Orycterotherium : Note” 
to Mr. Lea’s paper on New Species of Native Shells, 392.— * 
Facts connected with a stroke of Lightning, 393.—Separa- 
tion of Silver or Gold from Lead, 394.—Suggestions on the 
| total Solar Eclipse of July, 1842, 395.—Meteors of April 
Fs 18-20, 1841, 397.—Shooting Rust ot Der. 7, 1838, 398.— 
BA 
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