CIC 
CIR 
CicuTA. See Hemlock. 
Cinnabar. Extradl of a fetter containing feveral 
obfervations on cinnabar and gunpowder 
- - - Leewenhoel 
Cinnamon. A defcription of the cortex Winteran us, 
or wild cinnamon tree - Sloane 
— An account of the cinnamon in the iiland of 
Ceilan - - Stracban 
— - An account of the cinnamon-tree in Ceylon, 
and its feveral forts; communicated by the 
chi f infpe&or of thecmnamon trade and ma- 
nufafture in that iiland to Albertus Seba Anon . 
Some additions to the foregoing account Seba 
— An account of the cinnamon-tree W. Watfon 
— A difcourfe on the cinnamon, caffia, or ca- 
nella - - White 
Letter on the cinnamon - Combes 
Circle (Astronomy). An obfervation of an ex- 
traordinary lunar circle, and of two parafelenes 
made at Paris Odh 20, 1747 ‘ Grcfchow 
Circle (Gfometry). Anfwer to the animadverfions 
of Mr Hugenius upon Dr. Gregory's book, De 
vera Circuit & Hyperbolae Quadratura, as pub- 
lifhed in the journal des txavans Gregory 
— Some confiderations on Mr Huygens’s letter, 
printed in vindication of his Examen of the 
boo* in titled, De vera Circuli & Hyperbolae 
Quadratura - - Gregory 
The quantity of a degree of a great circle n 
Englilh meal u res - (Jldenburg 
*— — Cubic and biquadratic equations conftrudied by a 
par .bola and circle - Halley 
*— The condruclion of a quadratrix to the circle, 
being the curve defcribed by its equable evolu- 
tion - - Anon . 
An invedigation of feme theorems which fug- 
ged: fome remarkable properties of the circle, 
and are of ufe in refolving fradiions. whole de- 
nominators are certain multinomials, nto more 
fill) pie ones > - Landen 
*— — Ot triangles defcribed in circles and about 
them - - St Amah 
• Theorems concerning polygons of greeted and 
lead areas and perimeters infer ibing and cir- 
cumfcribing the ebeie - Horjley 
« — A new and general method of finding fimpl 
and quickly converging fenes 3 by which the, 
99 
Tranf. 
Abridg. 
XVII 754 
Ill 685 
— 462 
II 663 
XXIII 1094 
V 2 179 
XXXVI 97 
< 
US 
M 
M 
* — 106 
XLVI1 301 
L 860 
— 873 
XLV 524 
X4S3 
HI 732 
— 882 
XI 636 
I S87 
XVI 335 
~ 63 
XXII 445 
- 56 
XLVTI 566 
LXV 296 
— 301 
propor-^ 
