THE EDINBURGH NEW PHILOSOPHICAL JOURNAL, EXHIBITING A VIEW OF THE PROGRESSIVE DISCOVERIES AND IMPROVEMENTS IN THE SCIENCES AND THE ARTS. EDITORS. THOMAS ANDERSON, M.D., F.R.S.E., REGIUS PROFESSOR OF CHEMISTRY, UNIVERSITY OF GLASGOW; SIR WILLIAM JARDINE, BART., F.R.SS.L. AND E. F.R.S., SEC. R.S. EDIN., F.L.S., REGIUS KEEPER OF THE ROYAL BOTANIC GARDEN, AND PROFESSOR OF MEDICINE AND BOTANY, UNIVERSITY OF EDINBURGH. FOR AMERICA, HENRY D. ROGERS, LL.D., Hon. F.R.S.E., F.G.S., STATE GEOLOGIST, PENNSYLVANIA; PROFESSOR OF NATURAL HISTORY IN THE UNIVERSITY OF GLASGOW. FREE FUBLIC JANUARY ..... APRIL 1863. LIBRARY. ...... VOL. XVII. NEW SERIES. EDINBURGH: ADAM AND CHARLES BLACK. LONGMAN, BROWN, GREEN, & LONGMANS, LONDON. |