INDEX. 
R. 
Page 
Regijlers, oeeonomical, recommended - 
’ -to know the Hate of population 137 
--to difcover thieves, &c. - 138 
*---to know the quantity of corn 
annually produced - 
Rfid, Dr. quoted ... jgg 
Rein deer, their blood drank warm, how it afts as a pre- 
fervative from the fcurvy - - 104 
Religion, how far influenced by the fcenery of a country 279 
Rembrandt, charadter of his paintings - 410 
Repofitory, propofed for chemical and mechanical arts 85 
Reynolds, Sir Joshua, quoted - - 409 
Rhyme, why agreeable - _ - 1 j 3 
Roi, Mr. d e, his theory of evaporation - 3915 
S. 
Saturn, his fymbol explained - - - 232 
—— why ufed to reprefent lead - - 257 
Saltpetre, treatifeon by Mr. Massey - 184 
• . — - caufes of the ill fuccefs of trials for making 
it in England - - 185, &c. 
■■ ■ what principles enter into its compofuion 188 
— - how the peculiar acid, neceflary to form it, 
is generated - - - 191, &c. 
■ . the influence of putrefaction in forming it 193 
—————caufes of its abundance in India - 193 
» the old and approved method of obtaining it 203 
■ ' " makers of, in Paris, incorporated - 208 
— ■ account of the author’s experiments 209 
— . — method of making it in Paris - 211 
——-tranflation, on the ufe of pot-afh in making it 217 
*-— procured, ready formed, upon the earth, in 
Warm climates - 461 
Salt-fea, its natural hiftory as connected with that of 
magrielian earth ... 456 
Salt- 
