C M ] 
ner as Colours are reprefented in Heraldry-graving : 
Thus the Outfide of the Right Ventricle is (haded 
with Lines running from Top to Bottom pretty clofe, 
which denote that yoq, fhould paint that of a dark 
Red; the Outfide of the Left Ventricle, with Lines 
in the fame Dire&ion, but farther afunder, to denote 
a lighter Red ; the Inftde of the Right Ventricle is 
fhaded with Lines from Right to Left, to denote it 
fhould be coloured (for Diftin&ioivfake) blue ; then, 
where the double Courfe of Fibres form the outward 
Side, or Left Side of the Left Ventricle, and which 
are not to be feparatcd but by Art, there the Paper 
is left white or blank; but the Infide of the Cavity 
of the Left Ventricle is dotted, to reprefent yellow, 
that it may be coloured fo : The colouring the Figure 
in this manner, makes all the Parts much more 
diftincl, when rolled up into a Cone.] 
This Model, if I may fo call it, compared with 
the Heart of Man or Quadruped, will be found to 
anfwer in the following Manner: The Edge B F, in 
Fig. 1. or E F, in Fig. 2. anfwers to the tendinous 
Scam or Sulcus , which runs along the fuperiour Side 
of the Heart ; and the Dire&ion of the parallel Lines 
in Fig. 1. and 2. anfwers to the Courfe of the Fibres 
in each Part of the Heart; the circular Edge of the 
Paper BEE) anfwering to the tendinous Circle 
round the Bafe of the Heart, from which, and the 
Scam B F, all the mufcular Fibres take their Original : 
The exterior Fibres of the Right Ventricle, next the 
Apex or Point of the Heart at F, decuffate * each 
* This may be imitated by gumming on Threads, in the fame 
Directions as the parallel Lines in Fig. 1. turning them back crofs 
the Hole left at F. 
other. 
