
On Motion in the lumbar division of the Spine of Birds. By George Oakley Fleming, M.D. F.R.S. Communicated by Thomas Bell Esqre F.R.S. Some years <s>since<\s> ago, whilst engaged in the investigation of the power by which birds elevate the feathers connected with their passions, a <s>paper upon which<\s> subject on which I sent a paper to the Linnaean Society, in examining the Peacock’s tail, I removed the triangular cellular mass into which the quills of the upper tail covert are are inserted; and this brought into view the sacrum and a portion of two muscles, the major part of which was covered by a plate of bone, and <s>upon<\s> on removing this, I obtained a view of the whole of these muscles, which were of considerable size, running parallel with the spinal column, one on each side of the spinous processes. I was the more surprised at the direction as well as the origin and insertion of these muscles, as I had read Mr Earl<s>s<\s>e’s very interesting paper on the mechanism of the spine (published in the Philosophical Transactions for 1822, Part 1. Page 276.), in which, in speaking of the extent of motion in the cervical portion of the spine of birds, he observes, “so great indeed as completely to com- pensate for the deficiency in it in the dorsal and lumbar regions.” And at Page 278, he states “the same may be observed
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Manuscript details
- Author
- George Oakley Fleming
- Reference
- AP/28/6
- Series
- AP
- Date
- 1846
- IIIF
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Cite as
On Motion in the lumbar division of the spine of birds, by George Oakley Fleming , 1846. From The Royal Society, AP/28/6
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