LIST OF OFFICERS FOR THE YEAR 1837. PRESIDENT. WILLIAM MACLURE. VICE-PRESIDENTS. WILLIAM HEMBEL. JOHN PRICE WETHERILL. CORRESPONDING SECRETARY. SAMUEL GEORGE MORTON, M.D. RECORDING SECRETARY. T. STEWARDSON, M.D. CURATORS. CHARLES PICKERING, M.D., THOMAS M'EUEN, M.D., W. R. JOHNSON, E. HALLOWELL. M.D. LIBRARIAN. ROBERT BRIDGES, M.D. TREASURER. GEORGE W. CARPENTER. COMMITTEE OF PUBLICATION. THOMAS M'EUEN, M.D. ALFRED L. ELWYN, M.D. WALTER R. JOHNSON. JOSEPH CARSON, M.D. EDWARD HALLOWELL, M.D. OF VOLUME VII.-PART II. Description of Twelve New species of Birds, chiefly from 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., Member of the Academy of Natural Sciences of Philadelphia, Professor of Mechanics and Natural Philosophy in the Franklin In- Description of New Marine Shells, from Upper California. Collected by Thomas Nuttall, Esq. By T. A. Conrad, Observations on the effects of a remarkable Atmospheric Cur- rent or Storm, as witnessed on the day following its occur- rence. By Walter R. Johnson, A.M., Mem. Acad. Nat. Sci. Observations on the different species of Hares (genus Lepus) inhabiting the United States and Canada. By J. Bachman, D.D., President of the Literary and Philosophical Society, Charleston, South Carolina, &c., Some remarks on the Genus Sorex, with a Monograph of the North American Species. By John Bachman, D.D, Pre- sident of the Literary and Philosophical Society of Charles- JOURNAL OF THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA. Description of Twelve New Species of Birds, chiefly from the vicinity of the Columbia river. By JOHN KIRK TOWNSEND. Read November 15, 1836. [Mr. TOWNSEND's continued absence prevents the possibility of giving the habits and other particulars in reference to the following birds, discovered by him; for although his notes are very full on this subject, they were not transmitted with the specimens, and therefore must remain unpublished until his return, which is expected early next spring. During Mr. AUDUBON's recent visit to Philadelphia, he kindly offered to give figures of each |