
PROCEEDINGS or truz SEVENTEENTH MEETING, at Oxford, 
1847, Published at 18s. 
ConTENTs :—Prof. Langberg, on the Specific Gravity of Sulphuric Acid at different de- 
grees of dilution, and on the relation which exists between the Development of Heat and the 
coincident contraction of Volume in Sulphuric Acid when mixed with Water;—R. Hunt, 
Researches on the Influence of the Solar Rays on the Growth of Plants;—R. Mallet, on 
the Facts of Earthquake Phenomena ;—Prof. Nilsson, on the Primitive Inhabitants of Scan- 
dinavia ;—W. Hopkins, Report on the Geological Theories of Elevation and Earthquakes; 
—Dr. W. B. Carpenter, Report on the Microscopic Structure of Shells ;—Rev. W. Whewell and 
Sir James C. Ross, Report upon the Recommendation of an Expedition for the purpose of 
completing our knowledge of the Tides ;—Dr. Schunck, on Colouring Matters ;—Seventh Re- 
port of the Committee on the Vitality of Seeds ;—J. Glynn, on the Turbine or Horizontal 
Water-Wheel of France and Germany ;—Dr. R. G. Latham, on the present state and recent 
progress of Ethnographical Philology ;—Dr. J. C. Prichard, on the various methods of Research 
which contribute to the Advancement of Ethnology, and of the relations of that Science to 
other branches of Knowledge ;—Dr. C. C. J. Bunsen, on the results of the recent Egyptian 
' researches in reference to Asiatic and African Ethnology, and the Classification of Languages; 
—Dr. C. Meyer, on the Importance of the Study of the Celtic Language as exhibited by the 
Modern Celtic Dialects still extant ;—Dr. Max Miiller, on the Relation of the Bengali to the 
Arian and Aboriginal Languages of India;—W. R. Birt, Fourth Report on Atmospheric 
* Waves ;—Prof. W. H. Dove, Temperature Tables ;° with Introductory Remarks by Lieut.-Col. 
E. Sabine ;—A. Erman and H. Petersen, Third Report on the Calculation of the Gaussian Con- 
stants for 1829. 
Together with the Transactions of the Sections, Sir Robert Harry Inglis’s Address, and 
Recommendations of the Association and its Committees. 
PROCEEDINGS or tHe EIGHTEENTH MEETING, at Swansea, 
1848, Published at 9s. 
ConTENTS:—Rev. B. Powell, A Catalogue of Observations of Luminous Meteors;—J. Glynn 
on Water-pressure Engines ;—R. A. Smith, on the Air and Water of Towns ;—Eighth Report 
of a Committee on the Growth and Vitality of Seeds ;—W. R. Birt, Fifth Report on Atmo- 
spheric Waves ;—E. Schunck, on Colouring Matters ;—J. P. Budd, on the advantageous use 
made of the gaseous escape from the Blast Furnaces at the Ystalyfera Iron Works;—R. Hunt, 
Report of progress in the investigation of the Action of Carbonic Acid on the Growth of 
Plants allied to those of the Coal Formations ;—Prof. H. W. Dove, Supplement to the Tem- 
perature Tables printed in the Report of the British Association for 1847 ;—Remarks by Prof. 
Dove on his recently constructed Maps of the Monthly Isothermal Lines of the Globe, and on 
some of the principal Conclusions in regard to Climatology deducible from them; with an in- 
troductory Notice by Lt.-Col. E. Sabine ;—Dr. Daubeny, on the progress of the investigation 
on the Influence of Carbonic Acid on the Growth of Ferns ;—J. Phillips, Notice of further 
progress in Anemometrical Researches ;—Mr. Mallet’s Letter to the Assistant-General Secre- 
tary ;—A. Erman, Second Report on the Gaussian Constants;—Report of a Committee 
relative to the expediency of recommending the continuance of the Toronto Magnetical and 
Meteorological Observatory until December 1850. 
Together with the Transactions of the Sections, the Marquis of Northampton’s Address, 
and Recommendations of the Association and its Committees. 
PROCEEDINGS or tozE NINETEENTH MEETING, at Birmingham, 
1849, Published at 10s. 
ConTENTs :—Rev. B. Powell, A Catalogue of Observations of Luminous Meteors ;—Earl 
of Rosse, Notice of Nebulz lately observed in the Six-feet Reflector ;—Prof. Daubeny, on the 
Influence of Carbonic Acid Gas on the health of Plants, especially of those allied tu the Fossil 
Remains found in the Coal Formation ;—Thomas Andrews, M.D., Report on the Heat of 
Combination ;—Report of the Committee on the Registration of the Periodic Phenomena of 
Plants and Animals ;—Ninth Report of a Committee appointed to continue their Experiments 
on the Growth and Vitality of Seeds;—Francis Ronalds, Report concerning the Observatory 
of the British Association at Kew, from Aug. 9, 1848 to Sept. 12, 1849 ;—Robert Mallet, 
Report on the Experimental Inquiry conducted at the request of the British Association, on 
Railway Bar Corrosion ;-—William Radcliff Birt, Report on the Discussion of the Electrical 
Observations at Kew. : 
Together with the Transactions of the Sections, the Rey. T. R. Robinson’s Address, and 
Recommendations of the Association and its Committees, 
