. Anatomischer Anzeiger. Anatomy, Comparative. 244 cimens the relation of nerve-fibre, nerve - ending, and sarcolemma are especially well shown1). The individual muscle - fibres either run from one tendon to an- other or they may end at one extremity or at both within the muscle- fasciculi which extend from tendon to tendon. We may therefore distinguish two modes of ending of individual muscle-fibres: the "intra- tendinous", where the tip of the fibre terminates within a definite extension of a well marked tendon; and the "intrafascicular", where the muscle - fibre terminat
. Anatomischer Anzeiger. Anatomy, Comparative. 244 cimens the relation of nerve-fibre, nerve - ending, and sarcolemma are especially well shown1). The individual muscle - fibres either run from one tendon to an- other or they may end at one extremity or at both within the muscle- fasciculi which extend from tendon to tendon. We may therefore distinguish two modes of ending of individual muscle-fibres: the "intra- tendinous", where the tip of the fibre terminates within a definite extension of a well marked tendon; and the "intrafascicular", where the muscle - fibre terminates in the midst of a bundle of other muscle- fibres which have a different region of termination. In the former case the muscle-fibre has a rounded or cone-shaped termination, often swollen in isolated specimens (Fig. 2a). In the intrafascicular mode of ending the muscle- fibre gradually becomes more and more narrow until it finally terminates in a thread-like ex- tremity (Fig. 2b and c). Near the extreme tip of a typical fibre of this kind, isolated from a Fig. 2. Tips of muscle-fibres isolated from the ex- ternal oblique muscle of a rabbit, a intratendinous ending; b, c intrafascicular endings. Magnification about 1000 dia- meters. rabbit, the fibre was about 4 fi in diameter; 1 mm behind the tip it was 20^ in diameter; 2 mm behind the tip it was 40 (x in diameter; and in the region of greatest thickness, about 21j2 cm from the tip, 100 (.i in diameter. After digesting in pancreatin muscle-fibres which have been fixed in osmic acid, the sarcolemma together with a certain amount of the surrounding fibrous tissue, blood vessels, and nerves, may be washed, stained, and mounted in balsam. By staining deeply in Delafield's haematoxylin and counterstaining in Congo red, the fibrous tissue takes a red stain while the sarcolemma retains a bluish tint. This offers a good method of studying the relations of the sarcolemma to the fibrous tissue by which it is attached to the other struc
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