BELFAST 

 NATURAL HISTORY AND PHILOSOPHICAL SOCIETY. 



PROCEEDINGS, 



lOOTH SESSION 1920-1921. 



No. 2. 



19th and 26th November, 3rd and 10th December, 1920: 



4th February, 1921 ; 

 14th and 28th January, 11th and 25th February, 1921. 



A COURSE OF J'OUH LECTURES ON 



THE GROUNDWORK OF THE UNIVERSE FROM A 

 CHEMICAL STANDPOINT. 



_ BY PROFESSOR A. W. STEWART, D.Sc. 



THE PERCEPTION OF THE INVISIBLE. 



BY R. T. BEATTY, M.A., D.Sc. 

 A CY3URSE OF FOUR LECTURES ON 



SOME CHAPTERS IN MODERN BOTANY. 



BY PROFESSOR JAMES SMALL, D.Sc, Ph.C, F.L.S. 



BELFAST: 



MAYNE, BOYD & SON, LTD., 2 CORPORATION STREET 



(PRINTERS TO THE QUEEN'S UNIVERSITY). 



192L 



