which there was a mere coma, having a thickening towards the mid- 

 dle. Both streamers of the tail had di appeared, and the dark axial 

 space was filled with a faint luminosity. The tail, however, had be- 

 come longer. 



The tail, which was at this time preceding the head, was curved 

 slightly towards the aphelion, and was also in advance of a line 

 joining the sun with the comet's head. 



With a small telescope of low power, indications of a nucleus often 

 appeared, but were as often dispelled by the employment of more 

 powerful instruments. When the tail appeared to the naked eye 

 upwards of 40° long, nothing like a solid or stellar nucleus could be 

 discovered. There was only a mass of vapour, which, though con- 

 densed in certain parts, was still permeable to the rays of the mi- 

 nutest stars. 



3. On the Existence of Fluorine in the Bones from Arthur's 



Seat. By Dr G. Wilson. 



4. On the Composition of the Bones from Arthur's Seat. By 



Dr Christison. 



The author found that the bones of animals lately disinterred in 

 the course of the new drive, contained ^ of the quantity of gelatine 

 common in recent bones. 



The following Gentlemen were duly elected Ordinary 

 Fellows of the Society : — 



George Turnbull, Esq., W.S. 

 George J. Gordon, Esq. 



The following Donations to the Society''s Library were an- 

 nounced : — 



The London University Kalendar, 1846. — Bi/ the University. 



Journal of the Asiatic Society of Bengal, No. 159. — By the So- 

 ciety. 



The Electrical Magazine. Conducted by Mr Charles V. Walker. 

 January 1846. — By the Editor. 



Twenty-fifth Report of the Council of the Leeds Philosophical and 

 Literary Society for Session 1844-45. — By the Society. 



Biographical Notice of the late Sir John Robison, K.H., Sec. R.S. 

 Ed. By Professor Forbes. — By the Author. 



II Cimento; Giornale di Fisica, Chimica e Storia Naturale. 1844 

 and 1845, January to Aug. — By Professor Forbes. 



