[^4] 
Cum denique ex obfervatione noftra manifeftum fit, jre- 
vera tindam effe gemmam Chalcedoniam, quamvis fortui- 
to acciderit, neque repetito proceffu fimile quid evenerit, 
merebitur tamen meditationem, an ex aftrorum fluxu, alia- 
veabfcondita potius vi venerit. Sc. tentamen, an ex mixtura 
falium & fuccorum acrium poflit imitando produci ejufinodi 
linftura, & quidem fine Igne, ut fplendor & Pelluciditas 
gemmae non deilruatur, durities autem maneat, adeoque ip- 
fa gemmi^ pretiofitas non tantum .feryetg;r, led & per tiaclur 
ram novam crcfcat. if ^ ^rT ' » 
Hujus TinQrurce figuratn & modum, fi forte queni de- 
left et, addere placuic, qualis noctu oppofita Candelae vifa 
fuit, aliquomodo nec fatis accurate delineatuin.Tal^.i.Fig.6. 
i^Mairi^oj^^u iJ ^ -T!JfeT/ 
A CATALOGUE of Simple znd Mixt Coloiirs, 
with a Specimen of each Colour prefixt to its proper 
mme: By K. WALLER, Fellow of the %4/ 
Society. 
TY Aving fbmetime fince feen a TABLE of the <S/>w/>/^ 
_f7i Colo rs made ufe of in Limning and Painting^frint^ in 
the Y^ear 1680, at Stcckh Im y I h^VQ here endeavoured to 
gived.mOYQPhilofophicaly and ufefulone by the addition of 
fomt mixt Colours : Not that I pretend to give the Shades of 
all the mi t Colours , which were indeed infinite as the 
Compofitions and Proportions of them may be tmiimited ; 
but I have mixt each of the Simple Tellorn and Reds with 
eaCii of the/^?;;^:/.\i>y^ r^^^ and thefe give moft of the 
mem Co-rjW'^.'T^^f^* reenSy Purj?l&Sy &c. To know what each 
of xh^mixi Coioms is, com pounded of, you need but look to 
the Top of the T iJe direftfy over the Colour enquired after, 
whCi-e you may find the One Ingredient^ and at thq Side in 
