CONTENTS. 
I. The Bakerian Lecture. Observations on the Quantity of 
horizontal Refraction ; with a Method of measuring the Lip at 
Sea. By William Hyde Wollaston, M. D. F. R. S. page i 
II. A chemical Analysis of some Calamines. By James Smithson, 
Esq. F. R. S. p. 12. 
III. Experiments on the Quantity of Gases absorbed by Water , 
at different Temperatures , and under different Pressures. By 
Mr. William Henry. Communicated by the Right Hon. Sir 
Joseph Banks, K. B. P. R. S. p. 29 
IV. Experiments and Observations on the various Alloys , on the 
specific Gravity, and on the comparative Wear of Gold. Being 
the Substance of a Report made to the Right Honourable the 
Lords of the Committee of Privy Council, appointed to take 
into Consideration the State of the Coins of this Kingdom, and 
the present Establishment and Constitution of his Majesty's 
Mint. By Charles Hatchett, Esq. F. R. S. p. 49 
V. Observations on the chemical Nature of the Humours of the 
Eye. By Richard Chenevix, Esq. F. R. S. and M. R. I A. 
P- *95 
VI. An Account of some Stones said to have fallen on the Earth 
in France ; a?id of a Lump of native Iron, said to have fallen 
in India. By the Right Hon. Charles Greville, F.R.S. p. 200 
VII. Observations on the Structure of the Tongue , illustrated by 
