VoL.6l. Phllosopbicai Magazine. June 1823. 



Contents of Number 30?. 



LXXXII. On Phaenomena observed in the making of Oil.gas. By 

 Mr. John Elliott Pc^ge 401 



LXXXIII. On the Velocity of the Waves of the Sea. By Capt. 

 David Thomson 405 



LXXXIV. On Repeating Circles. By the Baron de Zach 107 



LXXXV. On Celestial Globes, By J. W. Woollgar, Esq. .. 421 



LXXXVI. On Opake Crystallized Carbon. By William He- 

 KAPATH, Esq. 423 



LXXXVII. Experiments on Oil and Coal Gas. By William He- 

 u A path. Esq 424 



LXXXVIII. M. Bessel on the Declination of the Stars 431 



LXXXIX. True apparent Right Ascension of Dr. Maskelvne's 

 ;;6 Stars for every Day in the Year 1823, at the Time of passing the 

 Meridian of Greenwich 434 



XC. An Account of the Observations and Experiments on the 

 Temperature of Mines, which have recently been made in Cornwall, 

 aud the North of England ; comprising the Substance of various Pa- 

 pers on the Subject lately published in the Transactions of the Royal 

 Geological Society of Cornwall, and in other Works 436 



XCI. Sketch of a Course of Lectures on Metallurgy delivered 

 at the London Institution, February 1823. By John Taylor, Esq. 

 Treasurer of the Geological Society 448 



XCII. Apparent Places of the four minor Planets at and about the - 

 Time of their ensuing Opposition. By S. Groombridge, Esq 459 



XCIII. Notices respecting New Books : Analysis of Periodical 

 Works on Botany 462-464 



XCIV. Proceedings of Learned Societies 464-467 



XCV, Intelligence and Miscellaneous Articles:— Astronomy. — 

 Minor Planets, — Sub-carbonate of Soda in India. — Galvanic Ap- 

 •>aratus. — Beneficial Effects of Vaccination in India. — Listof New Pa- 

 tents.— Meteorological Table 467—473 



■»* Communications for this Work, received by the Editors, 

 38, Shoe-Lane, will meet with every attention. 



RICHARn TAYLOR, PRINTER, SHOE-LANE, LONDON. 



