968 



PROCEEDINGS of the TWENTY-FIRST MEETING, at Ipswich, 

 1851, Published at 16s. 6d. 



Contents : — Kev. Prof. Powell, on Observations of Luminous Meteors ; — 

 Eleventh Eeport 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 ; — 

 Eeport 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 Eeproduction and supposed Existence of Sexual Organs in the 

 Higher Cryptogamous Plants ; — Dr. Daubeny, on the Nomenclature of Organic Com- 

 pounds ;— Eev. Dr. Donaldson, on two unsolved Problems in Indo-German Philology ; 

 — Dr. T. Williams, Eeport on the British Annelida ; — R. Mallet, Second Report on 

 the Facts of Eurthquake Phenomena ; — Letter from Prof. Henry to Col. Sabine, on 

 the System of Meteorological Observations proposed to be established in the United 

 States ; — Col. Sabine, Eeport on the Kew Magnetographs ; — J. Welsh, Report on the 

 Performance of his three Magnetographs during the Experimental Trial at the 

 Eew Observatory ; — P. Ronalds, Eeport 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 Eecom- 

 mendations of the Association and its Committees. 



PROCEEDINGS of the TWENTY-SECOND MEETING, at Belfast, 



1852, Puhlished at 15s. 



Contents : — R. Mallet, Third Eeport on the Facts of Earthquake Phenomena ; — 

 Twelfth Eeport of Committee on Experiments on the Growth and Vitality of Seeds; 

 — Eev. Prof. Powell, Eeport on Observations of Luminous Meteors, 1851-52 ; — Dr. 

 Gladstone, on the Influence of the Solar Eadiations on the Vital Powers of Plants ; 

 ■ — A Manual of Ethnological Inquiry ; — Col. Sykes, Mean Temperature of the Day, 

 and Monthly Fall of Earn 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 Eadiations ; — Dr. Hodges, on the Composition and 

 Economy of the Flax Plant ; — W. Thompson, on the Freshwater Fishes of Ulster ; — 

 W. Thompson, Supplementary Eeport on the Fauna of Ireland ; — W. Wills, on the 

 Meteorology of Birmingham; — J. Thomson, on the Vort ex- Water- Wheel ;— J. B. 

 Lawes and Dr. Gilbert, on the Composition of Foods in relation to Eespiration 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 of the TWENTY-THIRD MEETING, at Hull, 



1853, Published at 10s. 6d. 



Contents: — Eev. Prof. Powell, Eeport on Observations of Luminous Meteors, 

 1852-53; — James Oldham, on the Physical Features of the Humber ; — James Old- 

 ham, on the Eise, Progress, and Present Position of Steam Navigation in Hull ; — 

 William Fairbairn, Experimental Eesearches to determine the Strength of Locomo- 

 tive Boilers, and the causes which lead to Explosion ; — J. J. Sylvester, Provisional 

 Report on the Theory of Determinants ; — Professor Hodges, M.D., Report on the 

 Gases evolved in Steeping Flax, and on the Composition and Economy of the Flaz 

 Plant ; — Thirteenth Report of Committee on Experiments on the Growth and 

 Vitality of Seeds ; — Robert Hunt, on the Chemical Action of the Solar Eadiations ; 

 —Dr. John P. Bell, Observations on the Character and Measurements of Degrada- 

 tion of the Yorkshire Coast ; — First Eeport of Committee on the Physical Character 

 of the Moon's Surface, as compared with that of the Earth ; — R. Mallet, Provisional 

 Eeport on Earthquake Wave-Transits ; and on Seismometrical Instruments ; — 

 William Fairbairn, on the Mechanical Properties of Metals as derived from repeated 

 Meltings, exhibiting the maximum point of strength and the causes of deterioration ; 

 — Eobert Mallet, Third Eeport on the Facts of Earthquake Phenomena (continued). 



Together with the Transactions of the Sections, Mr. Hopkins's Address, and 

 Recommendations of the Association and its Committees. 



