INDEX. 
Meteor, account of one feen at Chigwell-row in Eftex, 
October 20, 1759 — Page 302 
Method of making Sal Ammoniac in Egypt — 504 
of computing the Turns of certain feries 553 
Michell (Rev. John ) M. A. his obfervations on the comet 
feen in January 1760 — — — 466 
• his conjectures concerning the 
caufe and obfervations upon the phenomena of earth- 
quakes — — — — 566 
Migration of fwallows , concerning it — ■■ 459 
Millepes (the Sea) obfervations thereon 35 
Mills and other machines depending on a circular motion , of 
the natural powers of water and wind to turn them 100 
Mills ( Jeremiah ) D.D. his remarks on the Bovey coal, 534 
• * his farther account of fome experi- 
ments on D2 — — — 94 j 
Mineral waters, thoughts on the different impregnation of 
them — — — - — 275 
■ — , concerning the exiftence of fuiphur in 
fome of them — - — — - ibid. 
Mitchell (Dr. John) his letter on the force of electrical co- 
hefion — — 390 
Modes or 'Tones in the antient Grecian mufic , an expla- 
nation thereof ■ — - — 695 
, the harmonic doCtrine thereof explained, 
as far as concerns the feven admitted by Ptolemy 697 
, the nautical doCtrine thereof explained, 
and its agreement with the harmonic fhewn — 703 
— — — , the eight harmonic rejected by Ptolemy 
explained, and his reafons for excluding them 71 1 
how far the preceding explanations of 
them may be fupported by arguments, or warranted by 
the teftimony of antient writers — — 739 
* 5 how far this fubjeCt has been underftood 
by other writers confidered — 760 
Montium quorundam praealtorum, magna ligni foffilis copia 
quafi infarCtorum, brevis defcriptio — — 50 6 
Moon, account of an eclipfe thereof, Nov. 22, 1760, 936 
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