. Anatomical technology as applied to the domestic cat; an introduction to human, veterinary, and comparative anatomy. Cats; Dissection; Mammals. 72 ANATOMICAL TECHNOLOGY. A. A tracer may be made by any one from a piece Of steel rod, or from a dental '' exca- vator," but the saving so eflfected is hardly wortb tbe trouble. The instrument is made by Codman & Shurtleff, and perbaps by others. B. The tracer is apparently similar to the "seeker" of the English anatomists, and the "finder " of the Germans. The instrument was introduced into the laboratory of Cornell Uni
. Anatomical technology as applied to the domestic cat; an introduction to human, veterinary, and comparative anatomy. Cats; Dissection; Mammals. 72 ANATOMICAL TECHNOLOGY. A. A tracer may be made by any one from a piece Of steel rod, or from a dental '' exca- vator," but the saving so eflfected is hardly wortb tbe trouble. The instrument is made by Codman & Shurtleff, and perbaps by others. B. The tracer is apparently similar to the "seeker" of the English anatomists, and the "finder " of the Germans. The instrument was introduced into the laboratory of Cornell University with a microscope presented by the late Hon. John Stanton Gould. The con- version of the opposite end into a tapering probe was suggested by Mr. Willis N. Rudd, a student, and the sharpening of the concavity was first proposed by the junior author. § 167. Trays—Fig. 78.—These are usually made of stout tin, but copper is more durable. If wood is used, it should be thoroughly oiled. A wire loop should be soldered at the middle of each end, and on each side at about one-sixth of the distance from each end. Four sizes of trays are convenient in the dissection of cats: 15 X 20, 20 X 30, 30 x 40, and 40 x 60 cm. The depth of the two smaller sizes should be about 1 cm., and that of the two larger about 2 cm. The largest size should be stiffened by diagonals upon the bottom. § 168. Tripod Magnifier—Fig. 26.—This is a simple magnifier with a large field, and mounted upon a tripod which may be placed. "!l Qlyeerin Fie. 36.—Tkipod Magnifier; x 1; § 168. Fig. 27.—Wettikg Bottle ; § 170. in liquid. While examining delicate objects out of liquid, it is safer to turn the legs toward the eye, or remove them altogether. The object should be held so as to receive the best light. § 169. Tunnels.—Several sizes are desirable, of both glass and tin. The latter should have the slender part fluted. When the larger part of a tin tunnel, or either part of a glass o
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