Xvi REPORT — 1841. 



The following Reports of Researches tindertalten at the request of the Associa- 

 tion Jutve been publis/ted, viz. 



1835. 



On the comparative measurement of the Aberdeen Standard Scale, by 

 Francis Baily, Treasurer R.S., &c. 



On Impact upon Beams, by Eaton Hodgkinson. 



Observations on the Direction and Intensity of the Terrestrial Magnetic 

 Force in Ireland, by the Rev. H. Lloyd, Capt. Sabine, and Capt. J. C. Ross. 



On the phaenomena usually referred to the Radiation of Heat, by H. 

 Hudson, M.D. 



Experiments on Rain at different Elevations, by Wm. Gray, Jan., and 

 Professor Phillips (Reporter). 



Hourly observations of the Thermometer at Plymouth, by W. S. Harris. 



On the Infra-orbital Cavities in Deers and Antelopes, by A. Jacob, M.D. 



On the Effects of Acrid Poisons, by T. Hodgkin, M.D. 



On the Motions and Sounds of the Heart, by the Dublin Sub-Committee. 



On the Registration of Deaths, by the Edinburgh Sub- Committee. 



1836. 



Observations on the Direction and Intensity of the Terrestrial Magnetic 

 Force in Scotland, by Major Edward Sabine, R.A., F.R.S., &c. 



Comparative view of tlae more remarkable Plants which characterize the 

 Neighbourhood of Dublin, the Neighbourhood of Edinburgh, and the South- 

 west of Scotland, &c. ; drawn up for the British Association by J. T. Mackay, 

 M.R.I.A., A.L.S., &c. ; assisted by Robert Graham, Esq., M.D., Professor of 

 Botany in the University of Edinburgh. 



Report of the London Sub- Committee of the Medical Section of . the 

 British Association on the Motions and Sounds of the Heart. 



Report of the Dublin Committee on the Pathology of the Brain and 

 Nervous System. 



Account of the Recent Discussions of Observations of the Tides which 

 have been obtained by means of the grant of money which was placed at the 

 disposal of the Author for that purpose at the last meeting of the Association, 

 by J. W. Lubbock, Esq. 



Observations for determining the Refractive Indices for the Standard Rays 

 of the Solar Spectrum in various media, by the Rev. Baden Powell, M.A., 

 F.R.S., Savilian Professor of Geometry in the University of Oxford. 



Provisional Report on the Communication between the Arteries and 

 Absorbents, on the part of the London Committee, by Dr. Hodgkin. 



Report of Experiments on Subterranean Temperature, under the direction 

 of a Committee, consisting of Professor Forbes, Mr. W. S. Harris, Professor 

 Powell, Lieut.-Colonel Sykes, and Professor Phillips (Reporter). 



Inquiry into the validity of a method recently proposed by George B. 

 Jerrard, Esq., for Transforming and Resolving Equations of Elevated Degrees ; 

 undertaken, at the request of the Association, by Professor Sir W.R. Hamilton. 



1837. 



Account of the Discussions of Observations of the Tides which have been 

 obtained by means of the grant of money which was placed at the disposal 

 of the Author for that purpose at the last Meeting of the Association, by J. 

 W. Lubbock, Esq., F.R.S. 



On the difference between the Composition of Cast Iron produced by the 

 Cold and the Hot Blast, by Thomas Thomson, M.D., F.R.SS. L. & E., &c.. 

 Professor of Chemistry, Glasgow. 



On the Determination of the Constant of Nutation by the Greenwich Ob- 



