Knowledge of the Laws of Conduction of Heat ;—G. L. Roupell, M.D., Report on 
Poisons ;—Mr. Bunt, Report on Discussions of Bristol Tides, under the direction of 
the Rev. W. Whewell ;—D. Ross, Report on the Discussion of Leith Tide Observa- 
tions, under the direction of the Rev. W. Whewell ;—W. SS. Harris, Esq., upon the 
Working of Whewell’s Anemometer at Plymouth during the past year ;—Report of 
a Committee appointed for the purpose of superintending the scientific co-operation 
of the British Association in the system of Simultaneous Observations in Terrestrial 
Magnetism and Meteorology ;—Reports of Committees appointed to provide Me- 
teorological Instruments for the use of M. Agassiz and Mr. M‘Cord ;—Report of a 
Committee to superintend the Reduction of Meteorological Observations ;—Report 
of a Committee for revising the Nomenclature of the Stars ;—Report of a Com- 
mittee for obtaining Instruments and Registers to recurd shocks of Earthquakes in 
Scotland and Ireland;—Report of the Committee for making Experiments on the 
Preservation of Vegetative Powers in Seeds;—Dr. Hodgkin, on Inquiries into the 
Races of Man;—Report of the Committee appointed to report how far the Deside- 
rata in our knowledge of the Condition of the Upper Strata of the Atmosphere 
may be supplied by means of Ascents in Balloons or otherwise, to ascertain the pro- 
bable Expense of such Experiments, and to draw up Directions for Observers in 
such circumstances ;—Richard Owen, Esq-, Report on British Fossil Reptiles ;— 
Reports on the Determination of the Mean Value of Railway Constants ;—Diony- 
sius Lardner, LL.D., Second and concluding Report on the Determination of the 
Mean Value of Railway Constants;—Edward Woods, Report on Railway Con- 
stants ;—Report of a Committee cn the Construction of a Constant Indicator for 
Steam- Engines. 
Together with the Transactions of the Sections, Prof. Whewell’s Address, and 
Recommendations of the Association and its Committees. 
PROCEEDINGS or tut TWELFTH MEETING, at MANCHESTER, 
1842, 7s. 
Contents :—Report of the Committee appointed to conduct the co-operation of 
the British Association in the System of Simultaneous Magnetical and Meteorolo- 
gical Observations ;—John Richardson, M.D., Report on the present state of the 
Ichthyology of New Zealand ;—W. Snow Harris, Report on the Progress of the Me- 
teorological Observations at Plymouth ;—Second Report of a Committee appointed 
to make Experiments on the Growth and Vitality of Seeds ;—C. Vignolles, Esq., Re- 
port of the Committee on Railway Sections ;—Report of the Committee for the Pre- 
servation of Animal and Vegetable Substances ;—Lyon Playfair, M.D., Abstract of Pro- 
fessor Liebig’s Report on “ Organic Chemistry applied to Physiology and Pathology ;” 
—Richard Owen, Esq., Report on the British Fossil Mammalia, Part I. ;—Robert 
Hunt, Researches on the Influence of Light on the Germination of Seeds and the 
Growth of Plants ;—Louis Agassiz, Report on the Fossil Fishes of the Devonian Sy- 
stem or Old Red Sandstone ;—William Fairbairn, Esq., Appendix to a Report on the 
Strength and other Properties of Cast Iron obtained from the Hot and Cold Blast ; 
—David Milne, Esq., Report of the Committee appointed at the Meeting of the 
British Association held at Plymouth in 1841, for registering Shocks of Earthquakes 
in Great Britain ;—Report of a Committee appointed at the Tenth Meeting of the 
Association for the Construction of a Constant Indicator for Steam-engines, and for 
the determination of the Velocity of the Piston of the Self-acting Engine at different 
periods of the Stroke ;—J. S. Russell, Report of a Committee on the Form of Ships ; 
—Report of a Committee appointed “ to consider of the rules by which the Nomen- 
clature of Zoology may be established on a uniform and permanent basis ” ;—Report 
of a Committee on the Vital Statistics of large Towns in Scotland ;—Provisional Re- 
ports, and Notices of Progress in Special Researches entrusted to Committees and 
Individuals. 
Together with the Transactions of the Sections, Lord Francis Egerton’s Address, 
and Recommendations of the Association and its Committees. 
LITHOGRAPHED SIGNATURES of the MEMBERS who met at Cambridge 
in 1833, with the Proceedings of the Public Meetings. 4to. Price 4s. (To Mem- 
bers, 3s.) 
