CONTENTS. 
iii 
Art. XXVI. Abstract of Mr Herschefs Experiments on Cir- 
cular Polarisation, - - 371 
XXVII, Observations on the Nature of Flame, drawn from 
several Experiments performed with an Appa- 
ratus for Discharging Ordnance without the 
use of a Match or Priming Tube. By John 
DEUCHARj M. W. S. and Lecturer on Chemis- 
try in Edinburgh, - - 374 
XXVIII. On a New Method of Calculating the the Paral- 
laxes for Occupations of the Fixed Stars. By 
M. Charles Rumker, Rector of the Nautical 
Academy of Hamburgh, - - 387 
XXIX. On the Movements of Camphor upon Water, and 
of different Alloys of Potassium when in con- 
tact with Water or Mercury, - 389 
XXX. An attempt to Analyse the Automaton Chess* 
Player of M. De Kempelen, - S93 
XXXI. Observations on the Natural History and Struc- 
ture of the Proteus Anguinus. By Sig. Con- 
FiGLiACHi and Dr Rusconi, - 398 
XXXII. Description and Use of ,^e Apparatus employed 
by M. Ampere in his Electro-Magnetic re- 
searches, - 4 o6 
XXXIII. Quarterly Abstract of the Diurnal Variation of 
the Magnetic Needle. By Colonel Beaufoy, 
F.R.S. - - 417 
XXXIV. Analysis of the Transactions of the Royal Society 
of Edinburgh, Vol. IX. Part I. - ib, 
XXXV. Proceedings of the Royal Society of Edinburgh. 
(Continued from p. 395.) - 423 
XXXVI. Proceedings of the Wernerian Natural History 
Society. (Continued from p* 19d.) - 426 
XXXVII. Proceedings of the Cambridge Philosophical So- 
ciety, - - - 427 
XXXVIII, Scientific Intelligence, » ?» 429 
I. NATURAL PHILOSOPHY. 
Astronomy. 1. Volcanoes in the Moon, % Occultation of ^ 
Pisces on the 6th February 1821. 3. Elements of the Cpr 
met which is expected in 1822. 4. New Comet of 1821. 
5. Observations on the Solar Eclipse of the 7th September, 
6. Geocentric Places of Pallas from April 1. to July SO. 1821. 
7* Geocentric Places of Juno, from May 5. to October 20, 
1820. 8. Astronomical Society of London. 9. Geocentric 
Places of Ceres and Vesta, » - « 429-433 
