A N 
TO THE 
FIFTY-FIRST VOLUME 
OF T H E 
Philofophical Tranfadtions. 
A 
/] B E R RAT 10 N E luminis in fuperficiebus refrac- 
YZ torum — Page 944. 
Acorns of the Englijh oak , method of preferving them 207 
of the cork tree, D° — 209 
Aleppo , account of the late earthquake there 
Alteration of the colour in a Negro woman , account thereof 
1 75 
America , account of that part of it which is neared to the 
land of Kamtchatka 477 
. of its produce and inhabitants 481, 482 
Amlwch (in the ifle of Anglefea) account of the vitriolic 
waters there — 47 ° 
Animal , fent from the Eaft Indies by General Clive, fome 
account thereof 648 
Antiquities , account of fome found in Cornwall — 13 
extradts of letters concerning feveral lately dif- 
covered in Italy — • — 201,636 
Antient Grecian mufic , an explanation of the modes or 
tones therein. — — — — 695 
Arm (broken) remarkable operation thereon — 657 
Artificial cold , how produced 670 
Afihefiosy account of a late difcovery of fome in France 837 
Y O L. LI. 6 K Aurora 
