CONTENTS. 
XVII. On the mode of generation of the lamprey and myxine. 
By Sir Everard Home, Bart. V. P. R. S. - 265 
XVIII. On the multiplication of images , and the colours which 
accompany them in some specimens of calcareous spar. By 
David Brewster, LL.D. F. R. S. Fond, and Edin. In a Letter 
\ 
addressed to the Right Hon. Sir Joseph Banks, Bart. G. C. B. 
P.R.S. - - - - 270 
XIX. A series of observations of the satellites of the Georgian planet , 
including a passage through the node of their orbits ; with an 
introductory account of the telescopic apparatus that has been 
used on this occasion ; and a final exposition of some calculated 
particulars deduced from the observations. By William Her- 
schel, LL.D. F. R. S. - - - 293 
XX. An account of some experiments with a large voltaic battery. 
By J. G. Children, Esq . F. R. S. - - 3 63; 
XXI. On the dispersive power of the atmosphere, and its effect on 
astronomical observations. By Stephen Lee, Clerk and Librarian 
to the Royal Society. Communicated by W. H. Wollaston, 
M. D. Sec. R. S. - - - - 375 
XXII. Determination of the North Polar Distances and proper 
motion of thirty fixed Stars, ily John Pond, Esq. Astronomer 
Royal, F.R. S. - - - - 384 
XXIII. An essay towards the calculus of functions. By C. 
Babbage, Esq. Communicated by W. H. Wollaston, M. D. 
Sec. R. S. - - - 389 
XXIV. Some additional experiments and observations on the 
relation which subsists between the nervous and sanguiferous 
systems. By A. P. Wilson Philip, Physician in Worcester. 
Communicated by T. Andrew Knight, Esq. F. R, S. 424 
