684 
of December, 1849;—R. Hunt, on the present State of our Knowledge of the 
Chemical Action of the Solar Radiations ;—Tenth Report of Committee on Experi- 
ments on the Growth and Vitality of Seeds ;—Major-Gen. Briggs, Report on the 
Aboriginal Tribes of India ;—F. Ronalds, Report concerning the Observatory of the 
British Association at Kew;—E. Forbes, Report on the Investigation of British 
Marine Zoology by means of the Dredge ;—R. MacAndrew, Notes on the Distribution 
and Range in depth of Mollusca and other Marine Animals, observed on the coasts. 
of Spain, Portugal, Barbary, Malta, and Southern Haly in 1849 ;—Prof. Allman, on 
the Present State of our Knowledge of the Freshwater Polyzoa ;—Registration of 
the Periodical Phenomena of Plants and Animals ;—Snggestions to Astronomers for 
the Observation of the Total Eclipse of the Sun on July 28, 1851. 
Together with the Transactions of the Sections, Sir David Brewster’s Address, 
and Recommendations of the Association and its Committees. 
PROCEEDINGS or THE TWENTY-FIRST MEETING, at Ipswich, 
1851, Published at 16s. 6d. 
CONTENTS :—Rey. Prof. Powell, on Observations of Luminous Meteors ;— 
Eleventh Report of Committee on Experiments on the Growth and Vitality of 
Seeds ;—Dr. J. Drew, on the Climate of Southampton ;—Dr. R. A. Smith, on the 
Air and Water of Towns: Action of Porous Strata, Water, and Organic Matter ;— 
Report of the Committee appointed to consider the probable Effects in an Econo- 
mical and Physical Point of View of the Destruction of Tropical Forests ;—A. 
Henfrey, on the Reproduction and supposed Existence of Sexual Organs in the 
Higher Cryptogamous Plants ;—Dr. Daubeny, on the Nomenclature of Organic Com- 
pounds ;—Rey. Dr. Donaldson, on two unsolved Problems in Indo-German Philology ; 
—Dr. T. Williams, Report on the British Annelida ;—R. Mallet, Second Report on 
the Facts of Earthquake Phenomena ;—Letter from Prof. Henry to Col. Sabine, on 
the System of Meteorological Observations proposed to be established in the United 
States ;—Col. Sabine, Report on the Kew Magnetographs ;—J. Welsh, Report on the 
Performance of his three Magnetographs during the Experimental Trial at the 
Kew Observatory ;—F. Ronalds, Report concerning the Observatory of the British 
Association at Kew, from September 12, 1850, to July 31, 1851 ;—Ordnance Survey 
of Scotland. 
Together with the Transactions of the Sections, Prof, Airy’s Address, and Recom- 
mendations of the Association and its Committees, 
PROCEEDINGS or tars TWENTY-SECOND MEETING, at Belfast, 
1852, Published at 15s. 
ConTENTS :—R. Mallet, Third Report on the Facts of Earthquake Phenomena ;— 
Twelfth Report of Committee on Experiments on the Growth and Vitality of Seeds; 
—Rev. Prof. Powell, Report on Observations of Luminous Meteors, 1851-52 ;—Dr. 
Gladstone, on the Influence of the Solar Radiations on the Vital Powers of Plants ; 
—A Manual of Ethnological Inquiry ;—Col. Sykes, Mean Temperature of the Day, 
and Monthly Fall of Rain at 127 Stations under the Bengal Presidency ;—Prof. J. 
D. Forbes, on Experiments on the Laws of the Conduction of Heat ;—R. Hunt, on 
the Chemical Action of the Solar Radiations ;—Dr. Hodges, on the Composition and 
Economy of the Flax Plant ;—W. Thompson, on the Freshwater Fishes of Ulster ;— 
W. Thompson, Supplementary Report on the Fauna of Ireland ;—W. Wills, on the 
Meteorology of Birmingham ;—J. Thomson, on the Vortex-Water-Wheel;—J. B. 
Lawes and Dr. Gilbert, on the Composition of Foods in relation to Respiration and 
the Feeding of Animals. 
Together with the Transactions of the Sections, Colonel Sabine’s Address, and 
Recommendations of the Association and its Committees. 
PROCEEDINGS or tor TWENTY-THIRD MEETING, at Hall, 
1858, Published at 10s. 6d. 
CoNTENTS :—Rev. Prof. Powell, Report on Observations of Luminous Meteors, 
1852-53 ;—James Oldham, on the Physical Features of the Humber ;—James Old- 
ham, on the Rise, Progress, and Present Position of Steam Navigation in Hull ;— 
