3* 
A R A 
ARE 
Arabian figures cut upon Hones, which wen- 
found in Ireland - Ward 
— A defcription of an antient date in Arabian fi- 
gures at Walling, near Aldermsrfton, Berk- 
lb ire - - Ward 
— See Dattr 
Arauastrum, Account of a new genus of plants 
called Araliaftrurn, of which the. famous Nin- 
Zin, or Gin-feng of the Chinefe, is a fpecies 
- V aiVant 
Arc. An invefiigation of ageneral theorem for find- 
ing the length of any arc of any conic hyper r 
bo!a by means of two elliptic arcs, with fome 
o her new and ufeful theorems deduced there 
from - - Lander 
Arch. An account of the appearance of feveral un- 
ufual parhelia, or mock funs, together with fe- 
veral circular arches lately feen in the air Hal ey 
Extrafls of feveral letters concerning the ap- 
pearance of feveral arches of colours contigu- 
ous to the inner edge of the common rainbow 
at Petworth - Langwith 
Another l tter, with fome reflections on the 
fame lubjeft - Pemberton 
- — — Account of aluminous arch, Feb«.i6, 1749 
- Cooper 
Archimedes.. Extract of aletterconcerningMr.de 
Buffon’s re-invention of Archimedes’s burning 
fpeeula - - Buffor 
* Observations' upon father Kircher’s opinion con- 
cerning the burning of the Beet of Marcel bus 
by Archimedes - Parfpns 
Archipelago* A relation of the raining of afhes 
in the Archipelago, upon the eruption of 
mount Vefuvius, lome years ago Re bin fan 
— Obfervations in travels from 'Venice through 
ifiria, Dalmatia, Greece, and the Archipelago, 
to Smyrna - - Per not 
Arcturus. An enquiry into the quantity and di 
redt on of the proper motion of Ar£Uirus 
with fome remarks on the diminution of the 
obliquity of the eclipric - Hornjby 
Arcutxo. Ex raft of a letter concerning the arcutu 
to lay children in, to preferve them from bein^ 
overlaid - - St. 'John 
Area. A fpecimen of a new method of comparing 
curviiineal areas ; by which m my fucli area> 
Tranf, 
XLI.I 283 
XLV 603 
XXX 705 
LXV 28 3, 
XXIII 1127 
XXXII 241 
— 245 
XLV I 647 
XLV 504 
XLVHI621 
1 377 
XI 573 
LXIII 93 
XXXVII 256 
Abridg. 
XI 126c 
— 1267 
IV 2 319 
— 228 
VI 122 
— 123 
x 5 °7 
— 195 
II 143 
VII 4 46 
mav 
