OF THE AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE. FOURTH MEETING, HELD AT NEW HAVEN, CONN., AUGUST, 1850. WASHINGTON CITY. NEW YORK: G. P. PUTNAM. 1851. EDITED BY SPENCER F. BAIRD, Permanent Secretary. EDWARD O. JENKINS, PRINTER, 114 Nassau street, N. Y. Dr. A. L. ELWYN, Treasurer. Dr. W. J. BURNETT, Secretary Sect. Geology and Prof. W. B. ROGERS, Secretary Sect. Physics and Mathematics. Prof. R. E. ROGERS, Secretary Sect. Chemistry and Mineralogy. STANDING COMMITTEE. Prof. L. AGASSIZ. E. C. HERRICK, Esq., Ex Officio. Prof. B. SILLIMAN, Jun. Prof. D. OLMSTED. Prof. A. D. BACHE, Dr. A. L. ELWYN, Prof. JOSEPH HENRY. Prof. E. N. HORSFORD. W. C. REDFIELD, Esq. Prof. H. D. ROGERS. Prof. J. P. NORTON. LOCAL COMMITTEE FOR THE MEETING AT NEW HAVEN. Rev. Dr. T. D. WOOLSEY. Prof. D. OLMSTED. Prof. N. PORTER. WILLIAM HILLHOUSE, Esq. Hon. A. N. SKINNER. Dr. JONATHAN KNIGHT. |