of Edinburgh^ Session 1862-63. 105 
Proceedings of the Horticultural Society. March 1863. 8vo.— 
From the Society. 
Transactions of the Historic Society of Lancashire and Cheshire. 
New Series. Vol. II. ^\o.— From the Society. 
Proceedings of the Koyal Institution. Vol. I. 8vo. — From the 
Institution. 
Monthly Notices of the Eoyal Astronomical Society. Vol. XXIII. 
No. 4. 8vo. — From the Society. 
Abstracts of the Proceedings of the G-eological Society of London. 
No. 91. 8 VO. — From the Society. 
The Journal of the Chemical Society. Nos. II. and III. 8vo. — 
From the Society. 
Monthly Keturn of the Births, Deaths, and Marriages registered in 
the Eight Principal Towns of Scotland. February, 1863. 
8vo. — From the Registrar-General. 
Journal of the Statistical Society of London. March 1863. 8vo. 
— From the Society. 
Pilote Francaise. — From the Depot de la Marine. 
Monday^ Qth April, 1863. 
Professor KELL AND, Vice-President, in the Chair. 
Mr J. D. Marwick presented, through Professor Smyth, specimens 
of lead from the roof of the lower storey of Nelson’s Monument, on 
the Calton Hill, injured by lightning. 
The following Communications were read - 
1. Accompanying Note to Portions of Lead from the Hoof 
of the Lower Storey of Nelson’s Monument, injured by 
Lightning on the evening of 4th February 1863. By 
Professor C. Piazzi Smyth. 
The portions of sheet-lead above mentioned had attracted my atten- 
tion on the days following the 4th of February, when engaged in re- 
pairing some damage which had then occurred to the electric wires 
connecting the Nelson Monument and the Observatory; and finding 
