121 



serving, that it would be needless for him to point out the im- 

 portant bearing of these facts on the question of the nature of heat, 

 and its connection with light. He concluded in the following 

 terms : — " It now only remains for me to present to Professor 

 Forbes the medal which has been awarded to him for these dis- 

 coveries. I believe that I shall be joined cordially by every 

 member of the Society who now hears me, in the fervent wish 

 that it may be the will of the Almighty Ruler, that his life may 

 be long protracted, with vigour of mind and health of body to pur- 

 sue the career in which he has made an advancement so honour- 

 able to himself, and reflecting lustre upon those great establish- 

 ments, the University and the Royal Society, with which he is 

 connected. I cannot doubt that he will persevere in this happy 

 path with the same ardour and success which have hitherto ac- 

 companied his researches. Indeed, we have a gratifying proof 

 that his zeal will not be impaired, nor his success less brilliaqt, 

 from the discovery in the same field announced by him at the 

 last meeting of the Society, of the Circular Polarization of 

 Heat." 



Monday, 1th March. 



Sib T. MAKDOUGALL BRISBANE, President, in the 



Chair. 



The following Donations were presented : 



Descriptions of the Inferior Maxillary Bones of Mastodons in the 

 Cabinet of the American Philosophical Society, with Remarks 

 on the Genus Tetracaulodon, &c. By Isaac Hays, M. D. — 

 From tJie Author. 



Catalogue of Fossil Fish in the Collections of Lord Cole and Sir 

 Philip Grey Egerton, arranged alphabetically, with references 

 to the localities, strata, and published descriptions of the spe- 

 cies. By Sir Philip Grey Egerton. — From the Author. 



Treatise on the more obscure Affections of the Brain, on which the 

 nature and successful treatment of many chronic diseases de- 

 pend. By A. P. W. PhUip, M. D., F. R. S. L. & E., &c 



From the Author. 



Memoires de I'Academie Imperiale des Sciences de St Peters- 

 bourg. (Sciences Mathematiques). Tome iii. Livrs. 2, 3, 

 4, 5, 6. 



