C ivU 
XVI. New Method of computing Logarithms. By Thomas 
Manning, Esq. Communicated by the Right Hon. Sir Joseph 
Banks, K. B. P. R. S. p. 327 
XVII. Description of the Mineral Bason in the Counties of 
Monmouth , Glamorgan , Brecon, Carmarthen , and Pembroke. 
By Mr. Edward Martin. Communicated by the Right Hon. 
C. F. Greville, F. R. S. p. 342 
XVIII. Observations on the Permanency of the Variation of the 
Compass at Jamaica. In a Letter from Mr. James Robertson 
to the Right Hon . Sir Joseph Banks, K. B. P. R. S. &c. 
p. 348 
XIX. Observations on the CameVs Stomach respecting the Water 
it contains, and the Reservoirs, in which that Fluid is inclosed; 
with an Account of some Peculiarities in the Urine. By 
Everard Home, Esq. F. R. S. p. 357 
XX. Observations on the Variation, and on the Dip of the 
magnetic Needle, made at the Apartments of the Royal Society, 
between the Tears 1786 and 1805 inclusive. By Mr. George 
Gilpin. Coimnunicated by Henry Cavendish, Esq. F.R.S. 
P- 3 % 
XXL On the Declinations of some of the principal fxed Stars; 
with a Description of an Astronomical Circle, and some Remarks 
on the Construction of Circular Instruments. By John Pond, 
Esq. Communicated by Smithson Tennant, Esq. F. R. S . 
p. 420 
XXII. Observations and Remarks on the Figure, the Climate , and 
the Atmosphere of Saturn and its Ring. By William Herschel, 
LL. D. F. R. S. p. 455 
Presents received by the Royal Society, from November , 1805, to 
June, 180b. p. 468 
Index. 
