CONTENTS. 
XL An essay towards the calculus of functions. Part II. By 
C. Babbage, Esq. Communicated by W. H. Wollaston, M. D 
Sec. R.S. - - - 179 
XII. Experiments and observations to prove that the beneficial 
effects of many medicines are produced through the medium of 
the circulating blood , more particularly that of the colchicum 
autumnale upon the gout. By Sir Everard Home, Bart. 
V. P. R. S. Communicated by the Society for improving animal 
chemistry. - 257 
XIII. An appendix to a paper on the effects of the colchicum 
autumnale on gout. By Sir Everard Home, Bart. V.P.R.S. 
XIV. On the cutting diamond. By W. H. Wollaston, M. D. 
Sec. R.S . - - - - 9.6 g 
XV. An account of the discovery of a mass of native iron in Brasil. 
By A. F. Mornay, Esq. in a letter to W. H. Wollaston, 
M. D. Sec. R.S. - - - 270 
XVI. Observations and experiments on the mass of native iron 
found in Brasil. By W. H. Wollaston, M. D. Sec. R. S. 
281 
XVII. On ice found in the bottoms of rivers. By T. A. Knight, 
Esq. F. R. S. In a letter addressed to the Right Hon. Sir 
Joseph Banks , Bart. G. C. B. P. R. S. - 28 6 
XVIII. On the action of detached leaves of pla?its . By 
T. A. Knight, Esq. F. R. S. In a letter addressed to the 
Right Hon. Sir Joseph Banks , Bart. G. C. B. P. R. S. 289 
