PROCEEDINGS OF THE MEETING. xllii 



IV. Miscellaneous Communications. 



Abercrombie, Dr. On the study of Mental Philosophy as a 

 part of Medical Literature. 



Adam, Rev. W. On a Sextant furnished with a Spirit Level, 

 to be used at sea or land when the horizon is invisible. 



Addams, R. On a phfenomenon of Sound. 



Adie, J. On the Expansion of Stone. 



Agassiz. On the Fossil Fishes of Scotland. 



On the recent genus Salmo. 



Aitken, Dr. On the Motions of Blood in Mammalia. 



Alison, Dr. On the Vital Powers of Arteries leading to in- 

 flamed parts. 



Andrews, T. On certain Caves in Rathlin, &c. 



Arago. Remarks on the methods of conducting experimental 

 researches in Magnetism, especially for the detection of 

 minute variations of Intensity and Direction. 



■' Proposal of submitting M. Poisson's conclusions regarding 

 the Change of Density near the Surface of Fluids to an 

 experimental test, by the observation of the angle of the 

 complete polarization of light at these surfaces. 



On the hypothesis of Transversal Vibrations in Physical 



Optics, and the claims of Dr. Thomas Young as the first 

 to propose it. 



Arnott, G. W. On Cocculus Indicus. 



Auldjo, J. Notice of a work of M. Rotindo on the Statistics 

 of Naples. 



Badnall. On Friction on Railways. 



Bell, Sir Charles. Discourse on the Nervous System. 



Blackadder. Notice of a Fossil Fish from Glammis. 



Boase, Dr. Statement of his views on the question of the Stra- 

 tification of certain primary Rocks. 



On Fissures and Veins. 



Boujou, Dr. Sur les rapports reciproques de la Medecine et la 

 Philosophic. 



Breen, Hugh. On a property of Numbers. 



Brewster, Sir David. On Colours in the spaces of the Rainbow. 



Experiments on the effects of Reflexion from the surfaces 



of Crystals when those surfaces have been altered by so^ 

 lution. 



On a large specimen of Amber from Ava. 



On the Optical Characters of Minerals. 



On the Structure of Feathers. 



Brisbane, Sir Thomas. Notice of a fact observed in registering 

 the Fall of Rain. 



d2 



