I N D E X. 
Magnetic needle (horizontal) attempt to account for its re- 
gular diurnal variation, and aifo for its irregular variation 
at the time of as- aurora borealis — Page 398 
Marble , experiments on fcveral pieces thereof ftained 30 
Marcbmont (Earl or) letter to him, concerning the fedlions 
of a folid hitherto not confidtred by geometers 446 
Marjham ( Robert ) Elq-, his obfervations on the growth of 
trees — — — — 7 
Majkeline (Rev. Nevil ) A M. his propofal for difcovering 
the annual parallax of Sirius — 889 
Maryland , thermometrical account of the weather there for 
one year • — • — — — 58 
• , D° for three years — ■ — 70 
Me afure of the Roman foot , an inquiry thereinto — - 774 
• of the Paris foot afcertained — — * 777 
Meafures of the temple of Fortuna Virilis at Rome ex- 
amined — — — 795 
of the temple of Vella at Rome examined 797 
of the temple of Vella at Tivoli examined 798 
• of the Pantheon at Rome — — ibid. 
of the temple of Peace — — 807 
'of the temples of Bacchus and Faunus — ■ 808 
of the amphitheatre at Verona 810 
of the arch of Titus — ibid. 
of the arch of Conflantine — — 81 1 
of the temple of Antonine and Faullina ibid. 
of the arch cxfSeptimius Severus 812 
■ of the Banker’s arch and the portico of Severus 815 
— of the baths of Dioclefian — — 817 
Meafures of trees , tables thereof — — 7, 10 
Metalline thermometer, a deicription of one — 823 
Metallotophyton , or Lignum Fojile , accounts of it, and 
where found — - — — — 543 
Meteor (fiery) feveral accounts of one that appeared on 
Sunday the 26th of November 1758 218 — 259 
, account of one feen at Sheflord in Berkfhire, on 
Saturday Gbtober 20, 1 759 — 299 
— , account of the fame, as feen at Bath, — 301 
Meteor 
