VI 
CONTENTS. 
Page 
Report on the present State of our Knowledge of the Science of 
Radiant Heat. By the Rev. Baden Powell, M.A. F.R.S., 
Savilian Professor of Geometry in the University of Oxford .. 259 
Report on Thermo-electricity. By the Rev. James Cum ming, F.R.S., 
Professor of Chemistry in the University of Cambridge. 301 
Report on the Recent Progress of Optics. By Sir David Brewster, 
LL.D. F.R.S, &c. 308 
Report on the Recent Progress and Present State of Mineralogy. 
By W. Whewell, M.A., Fellow and Tutor of Trinity College, 
and late Professor of Mineralogy in the University of Cambridge. 322 
Report on the Progress, Actual State, and Ulterior Prospects of 
Geological Science. By the Rev. W. D. Conybeare, F.R.S. 
V.P.G.S. Corr. Memb. Institute of France, &c. &c. &c.365 
Report on the Recent Progress and Present State of Chemical 
Science. By James F. W. Johnston, A.M. &c. .. 414 
Remarks on the Application of Philological and Physical Researches 
to the History of the Human Species. By J. C. Prichard, 
M.D. F.R.S. 530 
Transactions of the Sections 
Mathematics .. 545 
Optics .... 547 
Acoustics .. 556 
Magnetism.—Electricity . 559 
Chemistry. 570 
Meteorology. 579 
Geography.—Geology. 581 
Zoology.—Anatomy.—Physiology . 595 
Botany . 605 
Arts .. 607 
Miscellaneous .. 613 
Objects and Rules of the Association .. 615 
Index. 617 
