. The principles and practice of veterinary surgery . erent to certainparts of the sides of the vessels, and to each other, so thattheir individual forms can no longer be distinguished. In somecases the vessels have fusiform dilatations of their wholecircumference at certain points of their course, or at shortintervals pouches sprout from the sides of their walls. These PHENOMENA. 7 pouches are not, however, peculiar to the inflammatory state,and they have been ascribed to structural derangement of thewalls of the vessels, in consequence of which they cannot presentan eciuable resistance to th
. The principles and practice of veterinary surgery . erent to certainparts of the sides of the vessels, and to each other, so thattheir individual forms can no longer be distinguished. In somecases the vessels have fusiform dilatations of their wholecircumference at certain points of their course, or at shortintervals pouches sprout from the sides of their walls. These PHENOMENA. 7 pouches are not, however, peculiar to the inflammatory state,and they have been ascribed to structural derangement of thewalls of the vessels, in consequence of which they cannot presentan eciuable resistance to the column of blood, and consequentlythe blood becomes extravasated into the surrounding textures. Some have affirmed that constriction of the vessels nevertakes place prior to their dilatation. This, as already ex-plained, has arisen from the kind and strength of the irritantused by these observers; whilst others state that, during con-traction, the blood is seen to flow more rapidly through them,and that this is explained by the well-known fact that. Fig. 1.—An exact copy of a portion of the web in the foot of a young frog, aftera drop of strong alcohol had been placed upon it. The view exhibits a deep-seatedartery and vein, somewhat out of focus ; the intermediate or capillary plexus run-ning over them, and pigment cells of various sizes scattered over the whole. Onthe left of the figure the circulation is still active and natural. About the middleit is more slow, the column of blood is oscillating, and the corpuscles crowdedtogether. On the right, congestion, followed by exudation, has taken place. a. A deep-seated vein, partially out of focus. The current of blood is of a deepercolour, and not so rapid as that in the artery. It is running in the opposite directtion. The lymph space on each side, filled with slightly yellowish blood plasma, isvery apparent, containing a number of colourless corpuscles) clinging to, or slowlymoving along, the sides of the vessel. h. A deep-s
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectveterin, bookyear1904
