Osteologia Nova; Or Some New Observations of the Bones ...

Osteologia Nova; Or Some New Observations of the Bones ...

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1729 edition. Excerpt: ...supply of them from the Periqsteum z by the Fibres of which they flow into the Interstices of their Strings, and move in them as their Channels, as they did in those of the Fibres in the Nerves, and all the fibrous parts. _ That we may the better understand how the Particles of the Bones are capable of receding both laterally and at their extremities, we must consider that the Bones of a Fzztus are soft, and their parts at one time easily divifible; so that they will sensibly yield to the pressure of the Finger. When an Infant is born, they have very much of a cartilaginous Nature, and it is a considerable time before they arrive at the perfect solidity of a Bone. Now a Cartilage, as I shall urther shew when I come to discourse of those parts, is nothing but an imperfect Bone; or a Bone, in Which the extremities of the Particles are not united to form continued Threads; but there are small Interstices between them, though they are so disposed as to preserve the continuity of the whole Cartilage: and although, when it advances nearer to the true and perfect fect Nature of a Bone, many of them are united; yet they are not all so, until the Bone obtains its due solidity: so that whilst the Bones are cartilaginous, or bordering upon the nature of a Cartilage, their Particles are capable of receding both to one side, and af their extremities; which, being moved by the pressure of the nutritious juice, driven against them by the Rotation of the Spirits, they make room for lodging of the Nourishment out of the way of the Spirits direct motion. Those Particles which are driven against, and a poned to the sides of the several parts of t e bony Strings, increase the thickness, and enlarge the circumference of a Bone: those which are forc'd in...show more

Product details

  • Paperback | 46 pages
  • 189 x 246 x 3mm | 100g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236813162
  • 9781236813169