[ % ] . 
C. The Tart contiguous to the Right Ventricle. 
Fig. 2. The fame Foramen ovale viewed on the Side 
of the Left Auricle. 
A. The Valve drawn a little back, that the Hole 
may be feen. 
B. The Toint to which the Valve afc ended, when 
left at Liberty. 
C. The Tart which leads to the Left Ventricle. 
Fig. 3. The Second Sort of Foramen ovale open 
in the Adult, and feen on the Side of the 
Right Auricle. 
It differs from the Firft Sort, in being more funk 
in, or more approaching the Shape of a Funnel. 
Fig. 4. The fame Foramen ovale of the Second 
Sort, feen on the Side of the Left Auricle. 
It differs from the fame Side of that of the Firjl 
Sort, by the Valve beginning to make the Goofe- 
foot by its different Attaches , which much re- 
femble the Columns of the mitral Valves of the 
Heart. In the Figure 1 have added a Trobe 
paffed into the Foramen ovale from the Right 
* Auricle to the Left. 
Fig. 5. The Foramen ovale of the Third Sort open 
in the Adult, viewed on the Side of the 
Right Auricle. 
This Sort differs from the preceding Two , by the 
Foramen ovale, nearly forming a Funnel . 
Fig. 6. The fame Foramen ovale viewed on the 
Side of the Lef x. Auricle, and Two Probes 
palled into its Aperture. 
This Sort differs from the preceding ones, by the 
Goofe-foot formed by the Valve being much more 
compounded* 
The 
