Oc U 
circumference, or the ae - = oogon. 
area of an octogon, fee Por 
OcroGon, in Forti be Ges a place that has eight 
To find the 
baftions. See Bastion. 
ae id RUM, among the dnacients, a carriage with 
eight w 
whee 
It alfo fignified a chair, or litter, /e@ica, carried by eight 
— which kind of chair was moftly ufed by the 
OCTOPITARUM, in Ancient Geography, a promon- 
tory of Albion, which 1s evidently St. David’s Head in Pem- 
brokefhire. 
OCTOSPORA, in Botany, from oxjw, eight, and crogus, 
a feed, a genus of fungi avenge by aid of which he 
gives the following charaéter, in his Cr : 
« Trunk per rfeétl y fimple, teedinaes a 2 fertile furface, 
which i : ails concave, flat, or reflexed ; and out of which 
proceed very n ou 3, elongated, delicately meinbranous 
feed- st Faaterch furrounded with a filamentous fub- 
ftance, n ne ed a among themfelves, each of them pro- 
ts ve this genus, in his Gen. 770, but the pro- 
fe fled writers on PR Ungl, though ufually fo prolific in genera, 
apie negleét this, retaining the plants which compofe it 
the eftablifhed genus of Peziza, to which they properly 
belo ong. Indeed the charaéter of the feeds and their cafes 
is exactly the fame as in the old genus Lichen, or rather in 
nearly the whole of the natural order of Licu yaeal fee 
that article. do not mean that this would be any ob- 
jeCtion to its diflinguifhing a a of Fungi, having no Satie 
charaGter in common with the Lichenes, were it wanted for 
that purpofe. See PEeziza 
O STYLE, in the chen nia the face of 
a buildiay, or ordonnance, contain columns. 
The eight columns of the oétofl fen ae pes be difpofed 
in a right line, as in the Pfeudodiptere temple of Mowe 
and in the Pantheon; or in a circle, asin round Mon 
tere temple of Apollo Pythius at Delphi, 
OCTUNX, a oo ufed by fome Aieeos writers to 
fignify eight ou 
O ATA in a italics, aname given by many to 
the fifh more ufually called melanurus. as the n 
oculata, from the ae la egenels and fine eden iris 
ofitseye. See SPARUS —— 
LATU e Ey a ftone, in Natural Hiftory, 
Me are in nis “ Metallotheca Vaticana, 2 
maf{s was cut, to the eyes of animals, probably gave origin 
to this name. 
OCULI, 
7) putting forth, 
Eves, in Botany, the gemme or buds of a plant 
or the knots out of which thofe buds 
ari 
cur, Abdudor, Depreffor, stead and Odliquus, in 
Anatomy. See the re{pective article 
Ocuri Speculum. See ie ULUM. 
OCULIST is a name appropriated to a furgeon, who 
applies himfelf particularly . the ftudy and cure of difeafes 
t e eye. 
CULO-MuscuLAREs, in Anatomy, the nerves of the 
third pair, nae fupply the mufcles of the eyes. (See 
NERVE. ) 3 alfo eed motor oculi. 
See Eve 
OcuLus Beli in Natural Hiftory, the name of one of the 
OcU 
femi-pellucid gems of the genus of the Hydrophanz, or the 
reyifh-white ‘thle aegis variegated with yellow, and with 
a black central nucleu 
It is a very leet and beautiful gem; its bafis, or 
dada is a whitifh-grey, variegated with gel yellow, and fome- 
red, and a little black, but that more rarely, and 
n inch to an inch in 
s 
ta} 
[o¥) 
“oO 
whitifh-grey, more or lefs variegated with yel et &e. and 
its central nucleus is always of a deep and fine black, fur- 
rounded by a broad circle, of a pale yellow, and eis 
very beautifully the pupil and iris of the eye; thefe are 
enclofed in the matter of the 
in a great meafure, the en 
whole ftone becomes greatly more right - lucid, and cm 
grey part becomes ofa plainly yellow 
There are many things improperly aie oculus beli by 
our hapa but ‘he genuine {pecies is very rare. othing 
m fi 
veins of differen 
eculiar to the , but are common alfo in the cornelian, 
and ftand fomesimes fingle, fometimes two or three together, 
and according to the colours = sd circles, reprefent the 
eyes of various animals. See 
Ocul Cancrorum. See CRaAB’s 9 Byes 
Ocutus Cati. See Asteria and ees 
feed gently along the eye, interes ha appens 
be there will ftick to the feed, and fo be brought o 
OcuLus Sa slian a diftemperature of the et called 
alfo e&rcpium 
CULUS Mart us, the fea-eye, a name given by fom 
authors to = a marirus, ae its refemblance 
the ae of a 
Ocu 5s Muni, in Natural Hiffory, the name of one of 
- Feminplloid gems of the genus of the Hydrophane. 
of one pla 
a y, a . It is found 
In {mall maffes, of the fhape of our common flints and peb- 
of little beauty, has this very fingular Sa that, when 
thrown into a bafon of water, in the of nee minute 
it begins to change ‘its appearance, | eae foon, inftead o 
bright, and conideraly 
‘» OF the yell 
far as is yet known, only in China; but the fhores of fome 
of our own rivers afford. us {tones coming up to its qualities 
