i ^6 Of Shells. Part I, 
ORIENTAL PEARL, round, and with a good 
Water. 
PEARLS of the bignefs of a large Peas , and perfectly 
round, but without a Water. 
ROUND PEARLS, of divers Colours, fc. White, Allien, 
Brown, Red, and Bay. 
PEARLS of divers Figures, fc. Oval, Cylindrical, Flat, 
Conick, Twins, and three and four together. 
WELSH-PEALR. Given by the Honourable Mr. Boyle. 
They are moll of them flatifh, and of a fhining blackilh 
colour. 
Heretofore, the moll rich fifhing for Pearls , was at the 
(a) Gefner. Ifland Margarita. Whence their Name, (a) At this time 
the chief Filhings in the Eaft-Indies are three, the Perfian- 
Gulpl on theCoaff of Arabia the Happy, and in the Ifland 
Ceylan. In the Weft-Indies , five 5 along the Iflands Cubagna, 
and MangueritaystCamogete,Riodela Hacha,znd St. Marthas. 
They fifh in twelve-fathome Water,five or fix leagues oft at 
<b) Tavern. Sea, Spring and Fall, (b) 
indian-Fiy- Q| Pearls we have thefe following Preparations, and 
probably the firft, of all, the belt, if perfectly ground. 
Pulvis , Efentia, Flores, 
Sal, 1 inclura, Magifterium : 
Liquor, Arcanum , 
The PEARLY OYSTER. Concha Codata. Tis Raped 
much like the Mother of Pearl, but is fomewhat oblong. It 
hath alfo a pearly-colour within-fide 5 but of a more leaden- 
water. 
The SQUARE-MUSCLE. Concha Rhomboidea, f. M uft- 
culus ftriatus Rondeletio. That part where the Valves joyn, 
i. e. the Bafe, is long, not rounded, but ftrait, and ftandeth 
erect or perpendicular, by which it may be diftinguilhed 
from other Shells. It lies in the deeper parts of the Sea, and 
is rarely found. 
The RUGGED-OYSTER. Not deferibed, that I know. 
The Joynts hereof verylhallow. ThcNavle very oblique. 
The Sides thence produced, diftimilar. The Back cut with 
round Furrows, and the Furrows edged, and befet with a 
number 
-Commune 
)Butyraceum 
)Plumaceum 
-Riz/erij. 
