I CONTKNTS. 



Star, from the (Consideration of Atmospheric Refrac- 

 tion, By Edward Sano, S. M. A. S., Teaclier of 

 Mathematics, Edinburgh. Communicated by the 

 Author, - ^- ^ , - - - 320* 



XI. On the Longevity of Trees and the INIeans of Ascer- 

 taining it. By Professor De Candolle, - 330 



XII. On the Colour of the Atmosphere and Deep Water. 



Colour of the Atmosphere ; Colour of Deep Water ; 

 Colour of the Rhone ; different Colours of the Sea •, 

 Account of the Azure Grotto of the Islandj of^Capri, 

 &c. By the Count XavIer DE Maistrrj r T^rwv J 348 



XIII. Notice of Botanical Excursions into the Highlands 



of Scotland from Edittburgb^this, Sgasojj^ 1;833. . By 

 Dr Graham, - (^^aocpQ Tiiiiii^T-oJ 358 



XIV. Notice on the Osteology of the Hippopotamus. By 



Walter Adam, M.D,, Fellow of the Royal College 

 of Physicians of Edinburgh, M. W. S. &:c. Commu- 

 nicated by the Author, - c* : - - 361 

 XV. A Sketch of the Tertiary Formation in the Province 

 of Granada. By C. Silvertop, Retired Brigadier 

 in the Service of H. C M., K. of the R. and O. of 

 Charles III., and F. G. S. With Plates. Commu- 

 -•nicated by the Author, ^^^^ "-^^ ^'^ {-- ,u. ' ud . 3^4 

 •^XVI. Characters of New or Lit^&%^#¥l5^te of Plants. 

 ^» By Robert Wight, Esq. M. D., F. L. S., Hon. 



E. 1. C. S., and G. A. Walker Arnott, Esq. A. M. 



F. R. S. E. L. S. and M. W: S. Communicated by 



th6 AtiUioi^. - . mmuX^imisi.. 3^^ 



XVII. Description of several Netv or Rare Plants wbich have 

 lately Flowered in Gardens in the neighbourhood of 

 Edinburgh, but chiefly iii the Royal Botanic Garden. 

 By Dr Graham, Prbfessoi' of Botany in the University 

 of Edinburgh, - - L' ^^ - 381 



XVIIf.' Chemical Analyses of Stratified Rocks altered by Plu- 

 * torietm Agency ; and Analysis of Largo Law Basaltic 

 Rock and Wollastonite from Corstorphine Hill, 386 



XIX.' Celestial Phenomena from October 1. 18.33 to January 

 '1. 1834, (Calculated for the Meridian of Edinburgh, 

 Mean Time. By INIr George Innes, Astronomical 

 Ca!cnlator, Aberdeen, - - - 389 



