( ^975) 
D D The fides of the Left Ventricle divided and drawn 
afide, to (hew its infide d d e e f f G G. 
^d'd. Tfc Mitral Valves of the ' Left Ventricle oi ^ the 
H«5krt' t^r [Artena Pnlmamca divided and turn'd afide, 
y^^, ThQ Carney Columns ^ wiience fpriog the Tendons 
faften'd to the Valves, dd, e:^preft Fig. 5. d f. 
i f, -ATranfverre-Cord or Tendon, by which the Colum^ 
i/^Gr/?e^ are drawn nearer each other in the Sjfiole, or con- 
traction of the Heart, when th vBlood is expeli'd into the 
Aorta whereby the Tendons ("exprcfs'd f fFig.^g and 5) 
draw the Mitral Valve laterally ^ by which means its Ori- 
fice gc. Fig. ibidy is not only clofed to prevent the return 
. of the Blood by the VenaPulmondlk.hxxt at the farae time it 
opens a paflage for the Blood of the Arteria MagUii; by 
withdrawing the Mitral Valve, d Fig. 2. from the Orifice 
Oi the Aorta. di a a g.Tho this Artifice in N:^ture may be'in. 
differently explained by thefe Figures 5 yet I have deiun'd 
fome Others, that I think will make ic niore intellegible in 
' another placci ' ■ " - ' \ 
GG; The Internal Surface of the Left Ventricle' where- 
n is fome what fmootiier as it leads to the AorU. 
g g. The Trunk of the Coronary Vein divided when 
jiikd with Wax. 
h b. The Coronary Artery in like manner divided, 
■ ;4^-Dde'bi the Trunks of -the "Ptitmoiialk, • " 
- ■fc^k k. The three -Orificdsot the Trunks: oF^he I'e^M p^H-- 
monalis^ as they open into the Bulbous Truafc-exprefsy 
BB. ^ : -- '^ ^ ^ 
.*.'^heCone of^the 'Hekrt. 
A. ' Pai*t <5f thb Adrta next tto6 Heart, 
a a a. The three Semiluaiinary Valves,as they ap[>ear nex't 
the Heart ia -a Natb-'al Sfate{ when the Heart is'ini^DM- 
Jiot^^^iift&tbe Blood-1iindier\l by thefe Vklves from r^turti- 
ing to its Left Ventncle. 
•4) bV Part of the Bafis of the Heart cut off. 
ee. The 
