may be compared, as have not yet appeared to 
be comparable by any other method Landen 
■ i — Theorems concerning the greateft and leaft 
areas of polygons infcribing and circumfcrib- 
ing the circle - - Horjle y 
m Some new theorems for computing the areas of 
certain curved lines - Landen 
. See Curve. 
Areometer. Defcription and ufeof a new areome- 
ter - - Fahrenheit 
Areometry. An eiTay on pyrometry, and areome- 
try, and on phyfieal meafures in general 
De Luc 
Arithmetics An extract of two effays in politi- 
cal arithmetic^ concerning the comparative 
magnitude of London and Paris Petty 
An arithmetical paradox concerning the chances 
of lotteries - * Roberts 
— An account of a perfon who can neither read 
nor write, yet will reckon fums with great ex- 
a£lnefs - - Locke 
■ A ftiort account of negativo-affirmative arith- 
metick - - 'Colfon 
— The defcription and ufe of an arithmetical ma- 
chine invented by - Gerjlen 
— On the arithmetic of impofiible quantities 
- - Playfair 
Arm. An account of the cure of two linuous ulcers 
poffefiing the whole arm, with the extraordi- 
nary fupplyof a callus which fully anfwers the 
purpoftsof the Os Humeri loft in time of cure 
- Fawler 
Tranf. 
LVIII 174 
LXV 301 
jLX 44 1 
XXXIII 140 
LX VII I 419 
XVI 152,237 
XVII 677 
XXII 893 
XXXIV 161 
XXXIX 79 
LX VIII 318 
XXV 2466 
« An account of the man whofe arm, with the 
fhoulder-bone, was torn off by a mill, Aug. 
15, 1737 - - Belt hi er 
— — The cafe of Mary HoweH, who had a needle 
run into her arm and came out at her breaft 
- Anon. 
— An extraordinary cafe of a fra&ure of the arm 
- - Freke 
• An account of a cure of -a paralytic arm by elec- 
tricity - - Hart 
— — An account of a remarkable operation on a 
broken arm - - White 
• An account of the extra&ion of three inches 
and ten lines of the bone of the upper arm, 
XL313 
XLI 767 
XLVI397 
XLIX 358 
LT 657 
whjch was followed by a regeneration of the 
Abridg. 
VI 326 
III 679 
V 2 219 
VI I 
VIII 16 
V 388 
IX 266 
— 238 
XI 1108 
