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.

FIGURE III.

Shews the Spinal Artery which is produced within the bony Den nigh the more inward Superficies of the Marrow, from the hinder part of the Head to the Os Sacrum, in the shape of a Net-work purl.

• a. a. a. a. Arterious shoots sent towards the Spine from the Vertebral Artery ascending between the holes of the Spinal Processes.
• b. b. b. b. &c. Arterious shoots sent from the Aorta towards the Spine.
• c. c. c. c. &c. An Arterious shoot reaching out of every of the aforesaid shoots into the posterior Marrow.
• d. d. d. d. &c. Another shoot reaching out of every of the aforesaid shoots into the anterior Marrow.
• e. e. e. e. &c. Every the aforesaid Arterious shoots, as soon as carried into the bony v Den becoming forked, send forth a little branch into either part, which on both sides communicates with the next branch of the same side, and by the cross Process with the fellow-branch of the other side.
• f. f. f. f. The joynings together of the Arteries of either side by the cross shoot.
• g. g. The Arterious shoots going out of the Os Sacrum.
• h. h. Arterious shoots into the Mening•…•… of the hinder part of the Head.
• i. i. Arterious shoots going out of the Skull with the Nerves of the seventh pair.
• k. k. Shoots reaching out into the wonderful Net, which in their progress are ingraffed mutually among them∣selves, and also with the Arteries Carotides.

Tab. XIII.

[illustration]

Fig. III.

[illustration]

Fig. I.

[illustration]

Fig. II.

[illustration]

Fig. IV

[illustration]

Fig. V

PP. p. 156