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Colour to be the one that proceeds from an imper- 
fedl Tranfmiflion of a White; for no one can fay, 
but that both the internal Membranes and Humours 
of fuch fwarthy People are of the fame Colour in 
time of Health with thofe of the perfedeft white 
Skins, as well as they are in Negroes. And this 
feems to be the Caufe of the pale Yellow of dead 
Bodies, whofe Skins are not perfpirable, and, confe- 
quently not fo tranfparent, as in a living Subjed. 
From this Account of the Caufe of the Difference 
in Colour among thofe People that are white, we 
may account for the Caufe of the Colour of Indians , 
and other tawny People, who feem to differ from 
one another in Colour, and from white People only 
in Degree, as they have more or lefs of this tawny 
Yellow proceeding from the imperfed Tranfmiflion 
of a White in their Colours: Thus if we proceed 
from the fwarthieft white Perfon to the paleft Egyptian T 
from thence to the faireft Mafiee , Molatto , Moor-, 
&c. to the darkefl Indian , we may plainly fee, that 
they differ from one another only feeundum majus 
no el minus , according asdhey have more or lefs of the 
original White in their Colour : And as we have 
fhewn this tawny Colour in white People to proceed 
from the Thicknefs or Denfity of their Skins, obtrud- 
ing the Tranfmiflion of the Rays of Light ; fo it is very 
plain, that the fame tawny Colour, in thefe other tawny 
People, which feems to be of the fame Kind, but 
different in Degree, mud proceed from a like Caufe, 
that is, the Thicknefs or Denfity of their Skins; and, 
accordingly, it will be found, that all fuch People 
have Skins of a Thicknefs or Denfity proportional 
to the Whitenefs or Darknefs of their Colours. The 
particular 
