Cambridge Philosophical Society. 361 



There was also read a Description of a new Photometer, with its applica- 

 tion. By Mr William Ritchie, Rector of the Academy of Tain. See p. 

 339. 



At the same Meeting there was read a paper on the First Introduction 

 of Greek Literature into England after the dark ages- By Patrick Fra- 

 ser Tytler, Esq- 



March 7- — The following gentlemen were elected Members : 



Foreign Members. 



M. Mitscherlich, Professor of Chemistry in the University of Berlin. 



M. Gustavus Rose, Professor of Mineralogy in the University of Berlin. 

 Ordinary Members. 



Dr William Preston Lauder, Physician in Edinburgh. 



Right Honourable Lord Ruthven. 



Dr Edward Turner, Fellow of the Royal College of Physicians, and 

 Lecturer on Chemistry, Edinburgh. 



At this Meeting was read a paper on the Neptunian Formation of Sili- 

 ceous Stalactites, by the Rev. Dr Fleming. This paper is printed in this 

 Number, p. 307. 



2. Proceedings of the Cambridge Philosophical Society. 



May 3, 1824. — A communication was read from C. Babbage, Esq. 

 F. R. S. Fellow of the Cambridge Philosophical Society, on the Determi- 

 nation of the General Terms of a new class of Infinite Series. 



A paper was also read by G. B. Airy, Esq. Fellow of the Camb. Soc. on 

 the Construction of a new Achromatic Telescope. 



May 17. — A communication was read from J. Hogg, Esq. Fellow of 

 the Camb. Phil. Soc. on two Petrifying Springs in the neighbourhood of 

 Norton, in the county of Durham. 



A paper was read by G. B. Airy, Esq. Fellow of the Camb. Phil. Soc. 

 on the Principle and Construction of the Achromatic Eye-Pieces of Tele- 

 scopes, and on the Achromatism of Microscopes. 



May 24. — A paper was read by Dr Haviland, President of the Cam. 

 Phil. Soc. on the Cases of Secondary Small-Pox, and of Small-Pox after 

 Vaccination, which have occurred in Cambridge during the last year. 



A paper was read by the Rev. Professor Farish, Vice-President of the 

 Camb. Phil. Soc. on a Method of obviating the Inconveniencies arising 

 from the Expansion and Contraction of the Iron in Iron Bridges. 



May 25. — Being the anniversary meeting of the Society, the following 

 officers were appointed for the ensuing year: 



Dr Haviland, Regius Professor of Physic, President. 

 Dr F. Thackeray, \ 



Rev. W. Farish, Jacksonian Professor, > Vice-Presidents 



Rev. J. Cumming, Professor of Chemistry, ) 



Rev. B. Bridge, Treasurer. 

 Rev. G. Peacock, Tutor of Trinity, \ e . 



Rev. J. S. Henslow, Professor of Mineralogy, J Aecretar,es - 



