166 



ments, 1st July, IS'IS, announcing the donation to this So- 

 ciety of a medal bearing the effigy of Napier, of Merchiston, 

 the inventor of Logarithms: and — 



From the Etat Major of the Corps of Mining Engineers of 

 Russia, dated St. Petersburg, 8th October, 1S49, accompanying 

 a donation to this Society. 



The following donations were announced: — 



FOR THE LIBRARY. 



Philosophical Transactions of the Royal Society of London, for the 

 year 1850. Part 1. London. 4to. — From the Royal So- 

 ciety. 



Proceedings of the Royal Society of London. Nos. 73, 74, 75. Lon- 

 don, 1850. 8vo. — From the same. 



On the Means Adopted in the British Colonial Magnetic Observatories 

 for Determining the Absolute Values, Secular Change, and An- 

 nual Variation of the Terrestrial Magnetic Force. By Lieut. 

 Col. Sabine, R.A. For. Sec, F.R.S., &c. &c. London, 1850. 

 4to. — From the Author. 



On the Automatic Registration of Magnetometers and Meteorological 

 Instruments by Photography. No. 3. By Charles Brooke, M.B. 

 F.R.S. London, 1850. 4to. — From the Author. 



Papers on Meteorology, relating especially to the Climate of Britain, 

 and to the Variations of the Barometer; Communicated to the 

 Royal Society at various periods, from 1821 to 1845. By Luke 

 Howard, Esq., F.R.S. London, 1850. 4to. — From the Au- 

 thor. 



Essay on the Modifications of Clouds. By Luke Howard, F.R.S., &c. 

 London, 1832. 8vo. — From the same. 



Transactions of the Royal Society of Edinburgh. Vol. XVL Part 4, 

 for the Session 1847-8. Edinburgh. 4to. — From the Society. 



Proceedings of the Royal Society of Edinburgh. Vol. II. Nos. 31, 

 32. Edinburgh, 1847-8. 8vo. — From the same. 



Observations in Magnetism and Meteorology, made at Makersloun in 

 Scotland, in the Observatory of Sir Thomas Makdougall Bris- 

 bane, Baronet, &c. &c., in 1844; forming Vol. XVIII. of the 

 Transactions of the Royal Society of Edinburgh. Edited by 

 John Allan Broun, Esq., Director of the Observatory. Edin- 

 burgh, 1848. 4to. — From the same. 



Astronomical Observations made at the Royal Observatory, Edin- 

 burgh, by the late Thomas Henderson, F.R.S. L. andE.,&c. &c. 



