20 
AMEEICAN NATITEAL HISTORY. 
Journal of the Academy of Natural Sciences of Philadelphia— Continued. 
Observations on the Electi’ical Properties of Caoutchouc, or Gum Elastic, &c., by W. 
R. Johnson. 
Description of two New Species of Salamander, by Jacob Green, M.D. 
Description of fifteen New Species of recent, and three of Fossil Shells, chiefly from 
the Coast of the U.S., by Timothy A. Conrad. 
Description of the Fossil Bones of the Megalonyx, discovered in White Cave, Ken¬ 
tucky, by R. Harlan, M.D. 
Description of an extinct Species of Fossil Vegetable, of the Family of Fucoides, by 
R. Harlan, M.D. 
Notice of some Parasitic Worms, by S. G. Morton, M.D. 
Description of new North American Hemipterous Insects, by Th. Say (continued). 
Donations to the Cabinet of the Academy, during the years, 1827, 1828, 1829, and 
1830. 
Index to the Sixth Volume. 
Yol. YII. Part I. 13 Plates. 8vo, pp. 182. Philadelphia, 1834. 
CONTENTS. 
List of Officers for the year 1834. 
Catalogue of Plants collected chiefly in the Valley of the Rocky Mountains, near the 
Sources of the Columbia River, by Mr. N. B. Wyeth. Described by T. Nuttall. 
Description of some of the rarer or little-known Plants indigenous to the United 
States, by T. Nuttall. 
Observations on the Tertiary and more recent Formations of a portion of the Southern 
States, by T. A. Conrad. 
Descriptions of New Tertiary Fossils from the Southern States, by T. A. Conrad. 
Analysis of some of the Coals at Pennsjdvania, by H. D. Rogers and A. D. Bache. 
Description of a New Genus of Fresh-Water Shells, by T. A. Conrad. 
Description of a New Species of Hinnita, by T. A. Conrad. , 
Yol. VII. Part II. 10 Plates. 8vo, pp. 183 to 414. Philadelphia, 1837. 
CONTENTS. 
List of Officers for the year 1837- 
Description of twelve New Species of Birds, chiefly from the vicinity of the Columbia 
River, by John Kirk Townsend. 
Description of a New Species of Hare found in South Carolina, by J. Bachman. 
On the Fusing Point of Zinc, and a reference to the Relation between the Tenacity and 
the Fusibility of the Metals in general, by Walter R. Johnson, A.M., &c. 
Description of Two New Species of Trilobites, by Jacob Green, M.D. 
Desci’iption of New Marine Shells from Upper California. Collected by T. Nuttall, 
Esq., by T. A. Conrad. 
Observations on the Effects of a remarkable Atmospheric Current of Storm, as witnessed 
on the day following its occurrence, by Walter R. Johnson, A.M., M.A. N.S.P. 
Observations on the Different Species of Hares (Genus Lepus) inhabiting the U.S. and 
Canada, by J. Bachman, D.D., President of the Literary and Philosophical 
Society, Charleston, S. C. 
Some Remarks on the Genus Sorex, with a Monograph of the North American 
Species, by John Bachman. 
Additional Note on the Genus Lepus. 
Description of a New Species of Wood-pecker, by James Trudeau, M.D. 
Yol. VIII. Parti. 9 Plates. 8vo, pp. 171. Philadelphia, 1839. 
CONTENTS. 
Officers of the Academy of Natural Sciences of Philadelphia, for the year 1839. 
Description of New North American Neuropterous Insects, and Observations on some 
already described, by (the late) Thomas Say. 
Summary of Meteorological Observations for 1836 ; made in Fayette County, Tennessee, 
by M. Rhea. 
Description of Five New Fossils, of the older Pliocene Formation of Maryland and 
North Carolina, by Wm. Wagner. 
A few Facts in relation to the Identity of the Red and Mottled Owls, by Ezra 
Michener, M.D. 
Description of several New Species of American Quadrupeds, by the Rev. J. Bachman, 
of Charleston, S. C. 
List of Quadrupeds procured by Mr. Townsend, and sent to the Academy of Natural 
Sciences. 
Additional remarks on the Genus Lepus, with corrections of a former Paper, and 
descriptions of other Species of Quadrupeds found in North America, by John 
Bachman. . 
