INDEX, 
Swlnton (Rev. -John) his obfervations upon a Samnite- 
Extrufcan coin, never before fully explained. Page 853 
Symmer ( Robert ) Efq; new experiments and obfervations 
concerning electricity, by him — — 340 — 389* 
Syria, account of the earthquakes there in the year 1 759, 
529 
T 
'Fable of the meafures of trees — 7 
of the monthly increafe of trees ■ — — — 10 
of the refult of twenty-feven fets of experiments on 
underfhot water-wheels — — — 1 1 5 
- - of the refult of fixteen fets of experiments on over- 
fhot D° — — — 129 
of the refult of fix fets of experiments on windmill 
fails — - — — — 152 
of the ratio of the velocity of the extremities of wind- 
mill fails to the velocity of the wind 162 
— of the velocity and force of wind 165 
of obfervations for finding the annual parallax of Si- 
rius — — — 894 
F endons and mufcles of a man turning into bones , account 
thereof — — — — 89 
F err a F ripolitana , or Tripoli , account of fome obfervations 
relating to its produdtion — 186 
Fbermometrical account of the weather in Maryland for 
one year — — — — 58 
„ — D° for three years — — 70 
Thermometer (1 metalline ) a defcription of one — 823 
Thigh-bone , account of a complete luxation thereof in an 
adult perfon — — 676 
, — , account of a cafe of a luxated one reduced, 846 
Thoughts on the different impregnation of mineral waters 
2 75 
Thunder and lightning , account of a ftorm thereof at Nor- 
wich — — — — 38 
. , account of the effects of them at 
Rickmanfworth inHertfordfhire,on July 16, 1759— 282 
6 M 2 Fortes 
