The physiology of the circulation in plants : in the lower animals, and in man : being a course of lectures delivered at surgeons' hall to the president, fellows, etc of the Royal college of surgeons of Edinburgh, in the summer of 1872 . ated are endowed with more or less typical rhythmic movements. 2 Inaugaral Dissertation by the Author, On the Ganglia and Nerves of theHeart, p. 36. University of Edinburgh Library, 1861. rilYSIOLOGY OF THE CIRCULATION. 255 the lighter nerve-filaments in connexion therewith. A keen eye mayalso detect traces of the nerve-cells, which appear as dark roundedmasse
The physiology of the circulation in plants : in the lower animals, and in man : being a course of lectures delivered at surgeons' hall to the president, fellows, etc of the Royal college of surgeons of Edinburgh, in the summer of 1872 . ated are endowed with more or less typical rhythmic movements. 2 Inaugaral Dissertation by the Author, On the Ganglia and Nerves of theHeart, p. 36. University of Edinburgh Library, 1861. rilYSIOLOGY OF THE CIRCULATION. 255 the lighter nerve-filaments in connexion therewith. A keen eye mayalso detect traces of the nerve-cells, which appear as dark roundedmasses. To see the nerve-cells properly, the ganglion, if large,must be broken up with needles; if small, a thin covering-glass should be employed, and pressure applied with a viewto flattening and even squashing it. A microscope, magnifyingfrom 300 to 400 diameters, will reveal the nerve-cells as representedat Fig. 151, a, b, c, D, E. These figures are copied from my Inaug-ural Dissertation, deposited in the Library of the University of Edin-burgh in 1861, and it will be observed that they remarkably accordwith analogous figures representing the ganglia and nerve-cells inthe heart of the frog, published by Dr Beale in 1863. Fig. Fig. 151, A.—Large and small terminal ganglia with nerve-cells and nerve-fibres proceed-ing to and from them. a. Bundle of nerve-filaments in connexion with large ganglion (J).A similar bundle is connected with small ganglion (c).— Original. B.—Ganglionic enlargement or swelling of nerve as it crosses a vessel, a, b, Nerve-filaments proceeding to and from the ganglion and nerve-cells (c). d, Nerve-substancesurrounding and investing ganglion (c).— Original. C.—Large ganglion crowded with nerve-cells from coronary sinus of calf, a, b,c, d, e,f,g,h, Nerve-filaments proceeding to and from the ganglion and nerve-cells. The nerve-cellscontain a nucleus and one or more nucleoli. They are for the most part unipolar incharacter. A few bipolar nerve-e
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