INDEX. 
page 
Reversions, contingent , on the method of determining, - 223 
Ring of Saturn, observations on, - - 53 > 54> 57 
Rumford, Count of. An account ofamethod of measuring the 
comparative intensities of the light emitted by luminous bodies, 67 
—— — — - An account of some experiments upon 
coloured shadows, - - - - 107 
S 
Satellites of Jupiter, remarks on, - 3 ° 
Saturn, observations of a quintuple belt on, - - 28 
on the rotation of, upon its axis, - - - 48 
— observations upon its double ring, - - 53, 54> 57 
— observations of its south pole, - - ~ 57 
• observation of its five old satellites, - 56 
Schmeisser, Mr. John Godfrey. Account of a mineral sub- 
stance, called Strontionite; in which are exhibited its external, 
418 
physical, and chemical characters, 
Schroeter, John Jerome, Esq. Observation of the great 
eclipse of the sun, of September 5, 1793, - 
Shadows , coloured, experiments upon, - 
Spermaceti , on the conversion of animal muscle into a substance 
resembling it, - - - 
Spirit and water, tables for reducing their quantities by weight, 
to measure ; and for determining their proportions, 
Squinting, remarks upon, - - - - 
Stalactites, account of some large ones. 
Star, appearance like one, seen in the dark part of the moon, 429, 435 
Stretton, Thomas. Account of an appearance of light, seen by 
him, in the dark part of the moon, - - - 
Strontionite, account of a mineral substance, so called, - 
Sun, account of some particulars observed during its late eclipse, 
. observation of its great eclipse, September 5, 1793, 
Survivorship, observations on, - - 
262 
107 
169 
2 75 
213 
405 
435 
418 
39 
262 
223 
T 
Tables for reducing quantities by weight, of spirit and water, to 
measure; and for determining their proportion, - 275 
Tallow, on the quantity of it consumed in the production of light, 101 
Thermometer, register of, at Lyndon, in Rutland, - - *74 
Thompson, Sir Benjamin. See Count of Rumford. 
Transparency of flame, remarks on, - - - 104 
