niE TWENTIETH MEETING, at Edinburgh, 
PROCEEDINGS of 
1850, Published at 15s. 
Contests: — R Molls, Firs. Repos. .he F.c»of I 
Powell, on Observations of Luminous Meteors, . », (1| „ oro i 01 ,i ctt i observations taken 
mm BHtU. Wild. ,-T. C. H«, » »"^r | S ^R. Hun., on 
«St. Michael's from tlie 1st of January, 1840 t Radiations;—Tenth 
the present Stale of nnr Knowledge of the Chemical Action the Solar Q en. 
Report of Committee on F.xperitnenU on .the; Growth and a ^^; t S ^ rn ,“\ e Ob- 
Rriggs, Report on the Aboriginal Tribes of ,M jJ“ ' R jJ t | P investigation of British 
lervatory of the British Association at kew ;-L. Forte-, Report on t,cl " n u tribution and 
Marine Zoology b> means of the Dredge;-R. MacAndrew. Notes on ‘he L>..iribullon ana 
Range in depth of Mollusca and other Matine An^, observed on the » pr ^J gtatc of 
tugal, Barbary, Malta, and Southern Italy in 1849. *\ ro ‘ P,.rindie*l Phenomena of 
our Knowledge of the Freshwater Polyxoa -.-Registration of the Iir odteal Pb»noj e 
Plants and A^oah {-Suggestions to Astronomers for the Observetton of the lotal Lcl.psc 
of.huSi, D„U1 llrcw.iec’i AMrc, ...1 Recum- 
nicmlations of the Association and its Committee*. 
PROCEEDINGS of the TWENTY-FIKST MEETING, at Ipswich, 
1851, Published at 16s. 6 d. 
Contents :-Rev. Prof. Powell, on Observations of Luminous J* 
port of Committee on Experiments on the Growth anti Vitality o • ' ' . ’ , 
'he Climate of Southampton Dr. It. A. Smith, on the Air and W ater of lowns. Action of 
Porous Strata, Water anil Organic Matter ;-Report of the Cotnm.ttee appointed o consider 
tl>e probable Effects in an (Economical and Physical Point of V iew ® f * e ° 
picnl Forests;—A. llenfrcy, on the Reproduction and supposed Existence of Sexual Organ 
'n the Higher Cryptogumous Plants;—Dr. Dauheny. on the Nomenclature of OjSJjJJ?_ 
pounds;—Rev. Dr. Donaldson, on two unsolved Problems in Indo-Qennan htlology, 
»*• T. Williams, Report on the British Annelida,-B. Mallet, Second Report on ^JacU of 
Earthquake Phcenomcna;— Letter from Prof. Henry, u. Col. Sabine, on the System of Meteoro¬ 
logical Observations proposed to be established in the United SlatesCol. Sabine, Report 
un l be Kew Magnetosrapha;—J. Welsh, Report on the Performance of hi* three Magneto- 
pphsduring the Experimental Trial at the Kew Observatory;—K Ronslds, Report concern- 
‘"B the Observatory of the Brilish Association at Kew, from September 12, 1850, to July 31, 
1851;—Ordnance Survey of Scotland. ...... , „ 
Together with the Transactions of the Sections, Professor Airy s Address, and Recom¬ 
mendations of the Association nnd its Committees. 
PROCEEDINGS ok tiie TWENTY-SECOND MEETING, at Bel- 
* ast > 1852, Published at 15*‘. 
Contents:— R. Mallet, Third Report on the Facta of Earthquake Phenomena;—'Twelfth 
report of Committee on Experiments on the Growth and Vitality of Seeds; Rev. Prof. 
•jOwellj Report on Observations of Luminous Meteors, 1851-52;—Dr. Gladstone, on the In- 
, en !* of the Solar Radiations on the Vital Powers of PlantsA Manual of Ethnological 
‘nquiryCol, Sykes, Mean Temperature of the Day, nnd Monthly Fall of Rain, at 127 Sta- 
noiu under the Bengal Presidency Prof. J. D. Forbes, on Experiments on the Laws of the 
'-induction of Heat;—R. Hunt, on the Chemical Action of the Solar Radiations;—Dr. Hodges, 
on the Composition and (Economy of the Flax PlantW. Thompson, on the Freshwater 
o S , es of Ulster;—W. Thompson, Supplementary Report on the Fauna of Ireland;—W. \Y ills, 
and n Meteorol °gy °f Birmingham;—J. Thomson, on the Vortex-Water-Wheel;—J. B. Lawcs 
AnimaU Gllbert| °" lhe Com P osil,on of Foods in relation to Respiration and the Feeding of 
r nend^ e - tber Wlt '' *' ,c Transactions of the Sections, Colonel Sabine’s Address, and Recom- 
ations of the Association and its Committees. 
