4 
CONTENTS 
OF THE 
SECOND VOLUME. 
‘OBSERVATIONS on a Mafs of Iron found in Siberia by 
' Profeffor Pallas, and on other Maffes of the like Kind, with _ 
fome Conjectures refpecting their Connection with certaim 
natural Phenomena. By Profejor Curapwt of Wit- 
tenberg - - = - - page t 
Striftures on Mr, JoserH Couiiier’s  Obfervations on 
‘Iron and Steel.” By Mr. Davin Musuer, of the 
Clyde Iron Works - - = - 9 
Objervations on Platina, and its Utility in the Arts, toge- 
ther with fome Remarks.on the Advantages which refle@ing 
have over achromatic afte a By Atexis Rocuon, 
Direétor of the Marine Obfervatory at Breft 19, 170 
Cit. Cuarrar’s Procefs for whitening Prints, printed 
Books, and other Articles of Paper - . 28 
Proce/s for removing Spots of Greafe from Books and Prints. 
By M. Descuames, Jun. Member of the Pbhilofopbical 
_ Society at Lyons - - . - s0 
Ob/fervations on the Mole, and the Means of extirpating that 
defiruétive Animal - - ~ ~ 3% 
A curious Fa& in the Natural Hiflory of the common Mole, 
Talpa Europea Linn. By AntHUR Bruce, E/q. Secre- 
tary to the Natural Hiftory Society of Edinburgh 36 
‘Experiments and Obfervations tending to fhow the Compofttion 
and Properties of Urinary Concretions. By GEORGE PEAR- 
son, M.D. F.R.S. - - 38, 130 
Chemical Confiderations on the Ufe of the Oxyds of Iron in 
dyeing Cotton. By J. A. CHAPTAL - 4 
Defcription of a Thermometer which marks the greateft Degrees 
of Heat and Cold, from one Time of Obfervation to another, 
and may alfo regifler its own Height at every Injlant. By . 
Avex. Kerrn, E/g. F.R.S. and F.A.S. Edin. 61 
»Defcription of a Barometer, which marks the Rife and Fall of 
the Mercury from two different Times of Objervation; in- 
vented by Avex. Keitu, E/gy. F.R.S. and F.A.S. 
Edin. " . * e 65 
On 
