BRITISH ASSOCIATION FOR THE ADVANCEMENT 



OF SCIENCE. 



Life Members (since 18-45), aud all Annual Members wlio have not 

 intermitted their Subscription, receive gratis all Eeports published after 

 the date of their Membership. Any other volume they require may be 

 obtained on application at the Office of the Association, 22 Albemarle 

 Street, Piccadilly, Loudon, W., at the following prices, viz. — Eeports for 

 1849-68, at two-thirds of the Publication Pi'ice ; and for the purpose of 

 completing their sets, any of the first seventeen volumes, of which more 

 than 100 copies remain, at one-third of the Publication Price. 



Associates for the Meeting in 1870 may obtain tlie Volume for the Year at two-tliirds of 



the Publication Price. 



PROCEEDINGS of the FIRST and SECOND MEETINGS, at York 

 and O.vford, 1831 and 1832, Published at Vis. 6d. 



Contents : — Prof. Airy, on the Progress of Astronomy ; — J. W. Lubbock, on the Tides ; 

 — Prof Forbes, on the Present State of Meteorology ; — Prof. Powell, on tlie Present State 

 of tlie Science of Radiant Heat ; — Prof Camming, on Tliermo-Electricity ; — Sir D. Brewster, 

 on the Progress of Optics; — Rev. W. Whewell, on the Present State of Mineralogy ; — Rev. 

 W. D. Conybeare, on the Recent Progress and Present State of Geology ; — Dr. Prichard's 

 Review of Philological and Physical Researches. 



Together with Papers on Mathematics, Optics, Acoustics, Magnetism, Electricity, Chemistry, 

 Meteorology, Geography, Geology, Zoology, Anatomy, Physiology, Botany, and the Arts ; 

 and an Exposition of the Objects and Plan of the Association, &c. 



PROCEEDINGS of the THIRD MEETING, at Cambridge, 1833, 

 Published at 12s. (Out of Print.) 



Contents : — Proceedings of the Meeting ; — John Taylor, on Mineral Veins ; — Dr. 

 Lindley, on the Philosophy of Botany ; — Dr. Henry, on the Physiology of the Nervous Sys-- 

 tern; — P. Barlow, on the Strength of .Materials; — S. H. Christie, on the Magnetism of the 

 Earth; — Rev. J. Challis, on the Analytical Theory of Hydrostatics and Hydrodynamics; — 

 G. Rennie, on Hydraulics as a Branch of Engineering, Part I. ; — Rev. G. Peacock, on certain 

 Branches of Analysis. 



Together with papers on Mathematics and Physics, Philosophical Instruments and Mecha- 

 nical Arts, Natural llistory. Anatomy, Physiology, and History of Science. 



PROCEEDINGS of the FOURTH MEETING, at Edinburgh, 1831, 

 Published at 15s. 



Contents : — H. G. Rogers, on the Geology of North America ; — Dr. C. Henry, on the 

 Laws of Contagion ; — Prof, Clark, on Animal Physiology ;—Kevi L. Jenyns, on Zoology;— 



