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.S.E.; F.R.SS. L. & E., F.L.S., REGIUS KEEPER OF THE ROYAL BOTANIC GARDEN, AND PROFESSOR OF MEDICINE AND BOTANY, FOR AMERICA, HENRY D. ROGERS, LL.D., Hon. F.R.S.E., F.G.S., STATE GEOLOGIST, PENNSYLVANIA; PROFESSOR OF NATURAL HISTORY IN THE JULY ... OCTOBER 1861. VOL. XIV. NEW SERIES. C EDINBURGH: ADAM AND CHARLES BLACK. LONGMAN, BROWN, GREEN, & LONGMANS, LONDON. CONTENTS. PAGE 3. Description of a Method of Reducing Observations of Temperature, with a view to the Comparison of Cli- mates. By Professor J. D. EVERETT, King's College, 4. On certain Species of Permian Shells said to occur in Carboniferous Rocks. By Professor WILLIAM KING 5. Notes on Ancient Glaciers made during a brief Visit to |