Dr. Willis's practice of physick being the whole works of that renowned and famous physician wherein most of the diseases belonging to the body of man are treated of, with excellent methods and receipts for the cure of the same : fitted to the meanest capacity by an index for the explaining of all the hard and unusual words and terms of art derived from the Greek, Latine, or other languages for the benefit of the English reader : with forty copper plates.

The Second Figure

Represents the Oyster open, and unrolled, that its Viscera and internal parts may be seen.

• A. A. Two Gills dissected from the uppermost, and removed out of their places, that the Mouth of the Oyster may be plainly seen.
• B. The Mouth of the Oyster.
• C. The Veil or Covering of the Mouth.
• D. D. Two other superior Gills in their proper site with the Creeping Vessels.
• E. The superior brom•…•…ish portion of the Liver under which the Ventricle lies hid.
• F. The Heart made bare from the Pericardium with the broad and blackish Ear of it.
• G. The Aorta, by and by from the going forth of it from the Heart, divided into three bran∣ches.
• H. The first Branch ascending towards the Head.
• I. The second towards the strait Muscles.
• ...

• K. The third Branch tending into the Gills.
• L. The Trunk of the hollow Vein, entring into the little ear of the Heart.
• M. M. M. M. The Inferior Gills, with the Circular Muscles, cut off from the Body of the Oyster, where they stuck to it, and spread forth, that their Passages and Cavities might be beheld.
• N. N. N. N. The yoakings or beginnings of the Gills on which lye the several Vessels, viz. Veins and Arteries, O. O. O. O. and the holes lying between, P. P. P. P.
• Q. Q. Q. Q. The Extremities or fringes of the same Gills.
• R. R. The Inferior Circular Muscle of the right side, out of its site and inverted, that it may be seen.
• S. S. A portion of the same by which it sticks to the bottom of the Oyster.
• T. T. A portion of the same which Compassing the left side of the Oyster, sticks to the portion V.
• W. W. The upper Circular Muscle of the right side, folded and contracted, that it may not hide the Gills.
• X. X. A Portion of the same which Compassing about the left side of the Oyster, sticks to the Portion Y.
• Z. Z. The superficies of the Gills; in which the Finns or streaked Passages, for the ingress and egress of the Vital humour and the waters, appear.
• 1. The lower border of the Oyster, from which the Yoakings and the Circular Muscles are cut off.
• 2. A Portion of the Intestine ending in the Arse.
• 3. The Arse.