INDEX. 
M page 
Manganese , its effects on gold, - 62 
Merat Guillot , ili. remarks on his method of obtaining tannin, 262 
Mercury , observations of its transit over the disk of the sun, 214 
Metals , experiments to prove affinity among them, - 311 
Mirrors , on the causes which prevent their proper action, 214, 217 
Moulds , on the effects produced in metals by different ones, 87, 118 
Mudge, Major William. An account of the measurement of 
an arc of the meridian, extending from Dunnose, in the Isle 
of Wight, latitude 50° 37' 8", to Clifton, in Yorkshire, latitude 
53° 2 7 / Z y "> c °u rse of the operations carried on for the trigo- 
nometrical survey of England, in the years 1800, 1801, and 
1802, * 
MyrobalanSt on the infusions of them, 
- 
383 
267 
N 
Nickel, its effects on gold. 
- 
61 
O 
Oak, on the infusions of its bark, 
— on its internal organisation, 
Oxide, nitrous , on its absorption by water, 
- — gaseous of carbon, on its absorption by water, 
26 0 
282 
- 2 75 
37, 276 
P 
Palladium , enquiries concerning the nature of a metallic substance 
so called, - - 290 
Plalina , its effects on gold, 82 
on alloying it with mercury, - 298 
experiments on, - - - - 314 
Potatoes , account of an experiment on, - - 288 
Presents received by the Royal Society, from November 1802 to 
June 1803, - - - - 509 
Pressure , on its influence in promoting the absorption of gases, 39 
R 
Refraction , horizontal, observations on, 1 
Remedy for the Master of the Mint , on the regulation so called, 115 
Rolling , us effects on the specific gravity of gold, - 127 
