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Balfour, A.M., M.D., F.R.S., Sec. R.S.E., Professor 
of Medicine and Botany, . . . .577 
Donations to the Library, . . . .581 
Monday , 21stf April 1862. 
On the Theory of Numbers. By H. Fox Talbot, Esq., 582 
On the Carboniferous Volcanic Bocks of the Basin of the 
Forth. By Archibald Geikie, Esq., F.B.S., . 582 
On the Constitution of Society in this Country, with refer- 
ence to the Proportion which Male Life bears rela- 
tively to F emale Life, and the Effects of an Excess of 
Female Life. By W. T. Thomson, Esq., . . 583 
On the Danger of Hasty Generalisation in Geology. By 
Alexander Bryson, Esq., . . . 604 
On the Deflection of the Plummet caused by the Sun’s 
and Moon’s Attraction. By Edward Sang, . 604 
Note on Gravity and Cohesion. By Professor William 
Thomson, . . . . . .604 
Donations to the Library, . , . .606 
Monday , 28 th April 1862. * 
Experimental Inquiry into the Laws of the Conduction of 
Heat in Bars, and into the Conducting Pow r er of 
Wrought Iron. By Principal Forbes, . .j, 607 
On Certain Vegetable Formations in Calcareous Spar. By 
Principal Sir David Brewster, . . .610 
On the Existence of Acari between the Laminae of 
Mica in Optical Contact. By Principal Sir David 
Brewster, . . . . .610 
On the Secular Cooling of the Earth. By Professor 
William Thomson, . . .610 
Notice of the Ravages of the Limnoria Terebrans on Creo- 
soted Timber. By David Stevenson, Esq., F.R.S.E., 
M.I.C.E., &c., . . . . .612 
On some Thermic Properties of Water and Steam. By 
Professor W. J. Macquorn Rankine, . . 616 
Formulae connected with small continuous Displacements 
of the Particles of a Medium. By Professor Tait, 617 
Donations to the Library, . 1 . . .623 
