The workes of that famous chirurgion Ambrose Parey translated out of Latin and compared with the French. by Tho: Johnson. Whereunto are added three tractates our of Adrianus Spigelius of the veines, arteries, & nerves, with large figures. Also a table of the bookes and chapters.

CHAP. XII. Of the Spinal Marrow, or Pith of the Back.

* 1.1THe Spinal Marrow is like a River running from the fountain of the Brain. This sends nerves for sense and motion to all the neigbouring 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.* 1.2 This same Spinal Marrow is covered with the two membranes investing the Brain, distinguished by no distance of place, as in the Brain. 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 forwards and about. The diseases of this marrow do almost cause

the like Symptoms, as the diseases of the Brain; 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,* 1.3 be moved out of their place, there follows a distortion or wresting aside of the Marrow; but then especial∣ly if it happen that one of the vertebra's be strained, so sharp and bitter a compression urges the marrow by reason of the bony body of the vertebra, that it will either rend it, or certainly hin∣der the passage of the spirit by it. But by these same holes of the vertebra's the veins and arteries go to the spinal marrow for to give life and nourishment to it, as the nerves by them pass forth into all the lower parts of the body.

Figure 1. sheweth the form of the spinal marrow properly so called, with its membranes, and the nerves pro∣ceeding from it.

Figure 2. the spinal marrow naked and bare, together with its nerves, as most part of Anatomists have de∣scribed it.

[illustration]

The tenth Figure of the Spinal Marrow.

• A, The beginning of the spinal marrow where it fals out of the skull.
• B, the thickness thereof in the spondels or rack-bones of the loins.
• C, the division thereof into strings, or hairy threds.
• D, the seven nerves of the neck.
• From D. to E. or from 7. to 19. shew the nerves of the back.
• From E. to F. the nerves of the loins.
• From F. to G. the nerves of the Os sacrum, or holy-bone.
• H, the end of the marrow.
• IKL, do shew how the nerves do issue from the marrow in strings.
• MM, the knots of the sinews made of the con∣junction of those strings.
• N, O, the membranes that invest the marrow.

Figure 2.

• A, the beginning of the spinal marrow in the skull.
• 3, 4, 5, 6, 7, these Characters shew (according to Vesalius opinion) how the conjugations of the nerves of the Brain do take their original skull from the marrow remaining yet without the
• B, the egress of the spinal marrow out of the skull.
• C, the cords or strings whereinto it is divided.
• D 7, the marrow of the neck and seven pair of sinews.
• E 19, twelve pair, or conjugations, of nerves proceeding from the marrow of the Chest.
• F 24, the marrow of the loins, and 5 pair of si∣news.
• G 30, the marrow of the Holy-bone, and 6 pair of sinews.
• H, the extremity, or end, of the spinal mar∣row.

Notes

• * 1.1

  What the Spi∣nal Marrow is.
• * 1.2

  The coats of the Spinal Marrow.
• * 1.3

  The diseases from the hurt∣ing of the spi∣nal marrow.