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It was before observed that, the fleshy columns on each side of the vertebra of the neck are formed by muscles internal to the Trapezius more than by that muscle, so, also from the shoulders down the back on each side of the spine is a similar collumn of flesh, which renders the Spine itself the bottom of the groove extending from the shoulders to the illium. These prominences, or fleshy columns (one on each side) are formed by the Longissimus dorsi, Sacrolumbalis & spinalis dorsi, which to the artist may be considered as one muscle & which, though covered by the Trapezius & Latissimus dorsi, may be viewed by the artist as external, for they are more marked than the Trapezius or Latissimus dorsi, which cover them. Their use is principally to extend the Trunk on the Pelvis. This ribs appear slightly through the Latissimus dorsi; (that being a thin muscle) where they are not covered by the Longissimus dorsi &c

There is another muscle of which a small portion may be said to be external called The Rhomboidus, under the Trapezius, attached to the base of the scapula and to the spine, use to draw the two scapula towards each other thereby pulling the shoulders backwards. The only part of this muscle that is external is at the inferior angle of the scapula and may be seen when the scapula is drawn forwards filling the angle formed there by the Trapezius & Latissimus dorsi

Transcription Notes:
column ilium