The workes of that famous chirurgion Ambrose Parey translated out of Latine and compared with the French. by Th: Johnson

CHAP. XII. Of the Spinall Marrow, or Pith of the Backe.

THe spinall Marrow is like a River running from the fountaine of the braine. * 1.1 This sends nerves for sense and motion to all the neighbouring parts under the head, spreading its branches as from the body of a tree. These branches, as we shall hereafter shew, are on each side thirty. This same spinall marrow is cove∣red * 1.2 with the two membranes investing the braine, distinguished by no distance of place, as in the braine. But also it hath another membrane added to these, being very hard and dense, which keeps it from being broken and violated by the violent bending of the body forewards and about. The diseases of this marrow doe almost cause the * 1.3 like Symptomes, as the diseases of the braine; For they hurt the sense and motion of all the parts lying beneath them, as for example; If any of the vertebra's of the back bone, be moved out of their place, there followes a distortion or wresting aside of the Marrow; but then especially if it happen that one of the vertebra's be strained, so sharpe and bitter a compression urges the marrow by reason of the bony body of the vertebra, that it will either rend it, or certainely hinder the passage of the spirit by it. But by these same holes of the vertebra's the veines and arteryes goe to the spinall marrow for to give life and nourishment to it, as the nerves by them passe forth into a•…•… the lower parts of the body.

Figure 1. sheweth the forme of the spinall marrow properly so called, with its membranes, and the nerves proceeding from it.

Figure 2. The spinall marrow naked and bare, together with its nerves, as most part of Anatomists have described it.

[illustration]

The tenth figure of the spinall marrow.

A, The beginning of the spinall mar∣row where it fals out of the skull.

B, The thicknesse thereof in the spondels or rack-bones of the loynes.

C, The division thereof into strings, or hairy threds.

D, the seven nerves of the necke.

From D to E or from 7, to 19, shew the nerves of the backe.

From E to F, the nerves of the loynes.

From F to G, the nerves of the os s••∣crum or holy bone.

H, the end of the marrow.

I K L, do shew how the nerves do•• issue from the marrow in strings.

M M, the knots of the sinewes made of the conjunction of those strings.

N O, the membranes that invest the marrow:

Figure 2.

A, The beginning of the spinall mar∣row in the scull.

3, 4, 5, 6, 7, These Characters shew (according to Vesalius opinion) how the conjugations of the nerves of the braine doe take their origi∣nall from the marrow remaining yet within the Skull.

B, The egresse of the spinall marrow out of the skull.

C, The cords or strings whereinto it is divided.

D 7, The marrow of the necke and seven paire of sinewes. E 19, twelve paires or con∣jugations of nerves proceeding from the marrow of the Chest. F 24, The mar∣row of the loynes and 5. paire of sinewes. G 30. the marrow of the holy-bone and 6, paire of sinewes. H, the extremity or end of the spinall marrow.

Notes

• * 1.1

  What the Spinall mar∣row is.
• * 1.2

  The coats of the spinall marrow.
• * 1.3

  The diseases from the hur∣ting of the spinall mar∣row.