C %m ) 
fblution of Clipper, which afforded the other colour, was of 
various Bletvs and Indigo' f. So that inftead of two colours, 
here is a great variety made ufc of for the produilion of all o- 
thers. Thus, fir wjianee^to produce all forts of Gr^f »/,the fe- 
veral degrees of r<?//f/n^ and ^^/^ Blew muA be mixed $ but to 
compound P-urples^ the Scarlet and deep Blew are to be the In- 
gredients. 
Now, xitht Animadverfor contend, that all the Reds and Tel- 
iW/ of the one Liquor, or Blews and Indigo s of ih^ other, are 
only various degrees and dilutings of the lame Colour, and not 
divers colours, that is a Begging of the Qiieftion ; And I 
ftiould as foon grant, that the two TA^Vrf/ or Sixths in Mufick 
are but fey^eral degrees of the fame found, and not divers 
founds^ Gfertainly it is much better to believe our Senfes, in- 
forming US5 that Red and yellow are divers colours^ and to make 
icaPhilofophical ^are^ Why the fame Liquor doth, accor- 
ding ta its various thickncfs, appear of thole divers colours^ 
than to fuppofe tbemto be the fame colour becaufe exhibited 
by the faqje liquor ? For, if that were a fufHcient reafon, then 
and 1f>//an?mufl alfobe the fame colour, fince they are 
both exhibited by the fame Tiodlure of l^JephritickjVood, But 
that they are divers colours, you will more folly underftand by 
the reafon^ which, in my Judgment, is this The Tindiure of 
Aloes is qualified to ixm%Xiitmo[l eafily the raynndued with red^ 
moii difpcultly the rays indued with viohty and with intermedu 
at degrees of facility the rays indued with tnterm^diat co!ours*So 
that where the liquor is very thin, it may fuffice to intercept 
moft of the viokti and yet tranfmit mofl of the other colours • 
all which together muft compound a middle Colour, that is, a 
faint yellow. And where it is fo much thicker as alfo to inter- 
cept moft of the Bkrvv^nA Greeriy the remaining Greeny Teller, 
and Red,\i mufl compound an Orenge. And where the thick- 
iiefs is fo great, that fcarce any rays can pafs through it be- 
fides thofe ind ued with l{ed <y mufl appear of that colour,and 
that fo much the deeper and obfcurer, by how the liquor is 
thicker* And the fame may be underftood of the various de- 
grees of bUw^ exhibited by the Solution of Copper, by reafon of 
its difpofition to intercept T^ed moft eafily^ and trtfifmic a deep- 
Mkm or jW/W' Colour mo £t freely* 
