BRITISH ASSOCIATION FOR THE ADVANCEMENT 
OF SCIENCE. 
* 
Life Members (since 1845), and all Annual Members who have not 
intermitted their Subscription, receive gratis all Reports 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, London, W., at the following prices, viz.—Reports for 
1849-68, at two-thirds of the Publication Price; 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 1873 may obtain the Volume for the Year at two thirds of 
the Publication Price. 
PROCEEDINGS orf truer FIRST anp SECOND MEETINGS, at York 
and Oxford, 1831 and 1832, Published at 13s. 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 the Present State 
of the Science of Radiant Heat ;—Prof. Cumming, on Thermo-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 or tHe THIRD MEETING, at Cambridge, 1833, 
Published at 12s. (Out of Print.) 
ConTENTs :—Proceedings of the Meeting;—John ‘I'aylor, on Mineral Veins ;—Dr. 
Lindley, on the Philosophy of Botany ;—Dr. Henry, on the Physiology of the Nervous Sys~ 
tem ;—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 History, Anatomy, Physiology, and History of Science. 
PROCEEDINGS or tHe FOURTH MEETING, at Edinburgh, 1864, 
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 ;—Rev. L. Jenyns, on Zoology :— 
1874. 19 
