[ 43 * ] 
lavas, abundantly (hew, that fire is capable of producing any required degree of com- 
padnefs, p. 55. Granitic lavas are granite rocks fufed, p. 63. 
Life, On the method of determining, from the real probabilities of life, the values of 
' contingent reverfions in which three lives are involved in the iurvivorfoip, p. 246. 
Lime , an ingredient in James’s powder, p. 345* 
Lift of Prefents, p. 423. 
Longitude , con fide ratio ns on the convenience of meafuring an arch of the para^el of, 
p. 106. 
Longitudes of Dunkirk and Paris from Greenwich, deduced from triangular meafure* 
ment, fuppofing the earth to be an ellipfoid, p. 236. 
Luc , J. A. de, on hygrometry, p. 1. 389. 
M. 
Made, Mr. on Tabaftieer, p. 368. 
Malvern Hills , compofed ot granite, p. 65 • 
Meteorological Journal , relating to atmofpfieric elearicity, p. 18$. See Eleftricity. 
- — — kept ai the Apartments of the Royal Society, for January 1*790, 
App. p. 2. February, p. 4. March, p. 6 April, p. 8. May, p. 10. June, p. 12. 
July, p. 14. Auguft, p. 16. September, p. 18. Odober, p. 20. November, p. 
2 2. December, p, 24. 
Mica , a fubftance common both to bafaltes and granites, p. 54* 
Micrometer , defcription of a Ample one for meafuring fmall angles with the telefcope, p. 
283. Telefcopical micrometers, divided into two clalfes, ibid. 
Milky <vj ay, confifts entirely of liars, p. 71. 
Moifture , in hygrofcopic bodies, can only be produced by means of water, p» z. Hy* 
grofcopic bodies cannot lofe parr of their moiiture, but by evaporation, p. 2. Quick- 
lime poflefles a great capacity for moifture, p. 4. Obfervations on extreme moifture, 
p. 10. Moifture, a quantity of invifible water, either evaporafele, or evaporated, p. 
14. The maximum of moifture known by the excels of water, p. 17. Extreme 
moifture exifts in the air, p 19. The idea ot two lorts of extreme moifture without 
foundation, p. 402. In a ftagnant air every evaporating Jubilance has an atmofphere 
of extreme moifture, p. 403. 
Morgan, Mr. on the method of determining, from the real probabilities of life, 
lire values of contingent reverfions in which three lives are involved in the fur- 
vivorlhip, p. 246. 
N. 
Nebulous ftars, obfervations on* p, 71. Diffufed nebiilofities obferved about the con- 
ftellauon of Urion, p. 85. 
P. 
