—Dr. C. Meyer, on the Importance of the Study of the Celtic Language as exhibited by the 
Modern Celtic Dialects still extant;—Dr. Max Miller, 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 tue 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 Cliniatology 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 tHe 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 to the Fossil 
Remains fonnd 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 Rev. T. R. Robinson’s Address, and 
Recommendations of the Association and its Committees. 
DOVE’S MONTHLY ISOTHERMAL MAPS OF THE GLOBE, with the accompanying 
Memoir, Price 5s. 
LITHOGRAPHED SIGNATURES of the MEMBERS who met at Cambridge in 1838, 
with the Proceedings of the Public Meetings, 4to. Price 4s. (To Members, 3s.) ; 
