. The principles and practice of dental surgery. Fio. 21. The nuclei of fibres ofdentine, arranged in a linear series,as shown by Mr. Xasmyth. irregular rounded cells. ORGANS OF MASTICATION. 47. These tubes are represented as piercing every part of thesurface of the pulp cavity,being, according to Pro-fessor Owen, about theToVff P^-rt of an inch indiameter; they radiate asbefore stated, from the in-ner to the peripheral surface of the dentine. In the rm. 22. Trausverse section of dentinal canals as they are commonly seen, magnified 450 diameters: a, canals lower incisive and canine ^^ *=^ toge
. The principles and practice of dental surgery. Fio. 21. The nuclei of fibres ofdentine, arranged in a linear series,as shown by Mr. Xasmyth. irregular rounded cells. ORGANS OF MASTICATION. 47. These tubes are represented as piercing every part of thesurface of the pulp cavity,being, according to Pro-fessor Owen, about theToVff P^-rt of an inch indiameter; they radiate asbefore stated, from the in-ner to the peripheral surface of the dentine. In the rm. 22. Trausverse section of dentinal canals as they are commonly seen, magnified 450 diameters: a, canals lower incisive and canine ^^ *=^ together; b, more , says the last mentioned author, those from the middleof the summit of the pulp cavity, ascend vertically to the enamelcovered surface of the dentine at the summit of the crown ; thetubes on each side of these gradually incline outward; thosewhich go to the angles of the crown, forming an angle of 45°with the middle vertical tubes ; at the sides of the crown thetubes incline still more outward, until in the middle of the fangthey become horizontal, and still lower, bend downward.*The vertical tubes are described as being nearly straight, but asthey begin to
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