146 Royal Society.' 



the Species that are known to inhabit the British Isles. By 

 J. Donovan, F.L.S. Vol. 1. 1/. I6s. — To be completed in 3 vols. 



royal 8vo. 



Dialogues on Entomology, illustrated with 25 engravings. 

 12mo. 125. plain, \8s. coloured. 



In the Press. 

 Two 4to Volumes, with Maps, A Geographical, Statistical, and 

 Historical Description of Hindoatau and the adjacent Country. 

 By Walter Hamilton, Esq. 



Taxidermy; or A Complete Treatise on the Art of Preserving 

 every Object of Natural History for Museums; with Lists of those 

 that are rarest or most wanted in European Collections. In a 

 small Svo Volume. ■ 



The Marquis of Worcester's Century of Inventions, from the 

 Original M8. with Notes, a biographical Memoir, and a Portrait. 



Journal of a Tour in Greece, Egypt, and the Holy Land ; with 

 Excursions to the River Jordan, and along the Banks of the Red 

 Sea to Mount Sinai. By W.Turner, Esq. Foreign Office. 3 vols.^ 

 Svo. 



A Journal of a Tour through Part of the Snowy Range of the 

 Himala Mountains, and to the Sources of the Jumna and the 

 Ganges, in IS 15. By T. B. Fiazer, Esq. Royal Svo. 



Twenty Views, illustrative of Mr. Frazer's Journal, elephant 

 folio. . 



Memoirs of the late R. L. Edgevvorth, Esq. partly written by 

 Himself, and continued by his Daughter, MissEdgeworth. 2 vols. 

 Svo. 



M. Lamouroux, Professor of Natural History in the Royal 

 Academy of Caen, is preparing to publish a work (with 4 Opiates) 

 on the Marine Polypi found in great abundance in the calca- 

 rious Formation of Lower Normandy. This work, which will be 

 useful to Geologists, will include a figure and description of the 

 fossil crocodile discovered near Caen. 



XIX. Proceedings of Learned Societies. 



ROYAL SOCIETV. 



Jan. 13. i^oNCLUDED the reading of Mr. HerschePs ela- 

 borate paper. On the Action of crystallized Bodies on Homo- 

 geneous Light, and on the Causes of the Deviation from New- 

 ton's Scale of Tints which many of them develop on an Exposure 

 to a polarized Ray. 



A paper 



