312 NOTICES OF THE MEETINGS. [May 9, 1853. 
Vereins zur Beférderung des Gewerbfleisses in Preussen— Verhandlu ngen, Jan, 
und Feb. 1853. 4to. Berlin, 
Weale, John, Esq. (the Publisher) — Rudimentary Treatises, 12mo, 1853:— 
On the Power of Water. By Joseph Glynn, F.R.S. 
Navigation and Nautical Astronomy. By H. W. Jeans, F.R.A.S. 
Fuel. By T. S. Prideaux. 
The Elements of Euclid, with additional Propositions and Notes, and an Intro- 
ductory Essay on Logic. By H. Law, C. E. Part I. Books 1—3, 
Fovhall, Edward M., Esq., M.R.I.— Portrait of Sir John Soane, one of the Ori- 
ginal Proprietors of the Royal Institution. 
Langdon, Augustus, Esq. — Specimens of Graphite in its Natural and Prepared 
Conditions. 
Spence and Dixon, Messrs., Pendleton, Manchester — Specimens illustrating the 
Manufacture of Ammonia-Alum derived entirely from Coal and Coal 
Strata : — 
No. 1. Alumina Coal Shale. 
No. 2. The same calcined. 
No. 3. Iron Pyrites as used for making Sulphuric Acid. 
No. 4. Model of “ Roaching Cask,” one-fourth actual size, containing 
Alum Crystals ready for the market, 
