Fig. 2.
The Heart divested of its External Membrane and Carnous Fibres after Boyling; so that the Disposition of the Subjacent Fibres may ap∣pear. The way of preparing the Heart to exhibit this Disposition of its Fibres, may be practis'd after the following Manner. The Heart with Portions of the Trunks of the large Blood-Vessels being taken off; the Blood as well within its Ventricles as Blood-Vessels being evacuated, then with Tow, or Pieces of Rags, fill the Ventricles, Auricles, and large Vessels on the Basis of the Heart; the Mouths of the large Blood-Vessels being stitch'd up, least their Contents should be Extruded by the Contraction of the Heart in Boyling. This done, Boyl it according to its Bulk; if it is the Heart of an Ox, &c. Boyl it Four or Five Hours; if of a Man, One or Two.
N. B. This Figure is Printed reverst.
A, A Sinus plac'd between both Ventricles, in which a large Trunk of one of the Coronary Arteries is convey'd.
B, The Cochleated or Oblique descending Order of Fibres of the Left Ventricle of the Heart.
C, The External and Oblique descending Order of Fibres of the Right Ventricle; which decussate the former or Subjacent Fibres in Acute Angles.
D, Part of the Arteria Pulmonalis.
E, The Aorta.
ee, The Trunks of the Coronary Arteries.
F, The Right Auricle.
G, The Left.