TO CORRESPONDENTS. 



Communications have been received from the Rev. M. J. Berkeley, 

 and H. O. Stephens. 



We must request that all Communications or Letters relating to this 

 Journal be forwarded free of expense. 



Just Published, in 8vo, price 7s. 6d. 



A REPORT on the PROGRESS of VEGETABLE PHYSIOLOGY 

 during the Year 1837. 



By Dr. F. J. F. MEYEN, Professor of Botany in the University of Berlin. 



Translated from the German by William Francis, Associate of the Linnaean 



Society. 



%* The object of this Report is to give the substance of all the important Works 

 and Memoirs on this interesting branch of Botanical Science. 



THE LONDON AND EDINBURGH 

 PHILOSOPHICAL MAGAZINE, and JOURNAL OF SCIENCE: 



CONDUCTED BY 



SIR DAVID BREWSTER, F.R.S., RICHARD TAYLOR, F.L.S., 

 AND RICHARD PHILLIPS, F.R.S. 



Contents of No. 96, for OCTOBER 1839. 



ON the " Sand Pipes" in the Chalk near Norwich. By Charles Lyell, Esq., 

 F.R.S., &c. 



On the use of a Secondary Wire as a Measure of the Relative Tension of Electric 

 Currents. By J. W. Draper, Prof. Chem. Univ. of New York. 



On the Configuration of the Scales of Butterflies' Wings, as exhibited in the Mi- 

 croscope. By the Rev. Ed. Craig, M.A., &c. 



On a new method of distinguishing Arsenic from Antimony in cases of suspected 

 Poisoning by the former substance. By J. Marsh. 



Account of a few Independent Notices of America by middle-age Writers. By 

 J. O. Halliwell, Esq., R.R.S., &c. 



Notice respecting the New Metal, Lantanium. By Prof. Kersten. 



On a small Voltaic Battery of great energy ; on Voltaic Combinations, and on 

 the Inactivity of a Copper positive Electrode in Nitro-Sulphuric Acid. By W. R. 

 Grove, Esq., M.A., &c. 



On the Geological position of the Culm- and Plant-bearing Beds of Devon and 

 Cornwall. By the Rev. D. Williams, F.G.S. 



Meteorological Observations in Colombia. By Col. R. Wright. 



On the Causes of the Holes that occur perforating sheets of Melting Ice. By 

 J. Ferguson. 



On the Separation of Lime from Magnesia, and on the Assay of Gold. By L. 

 Thompson, Esq. 



On the Use of Barometrical Formulae for determining the heights of Mountains. 

 By S. M. Drach. 



Proceedings of Learned Societies, numerous Miscellaneous Articles, and Me- 

 teorological Observations and Table. 



R. and J. E. Taylor, Red Lion Court, Fleet Street. 



