. Journal of morphology. e ovum; n, its nucleus; oe, epithelium of ovipore passing into the perito-neum ; cm, circular muscle fibre, between two of which the external opening is situ-ated ; Im, longitudinal muscles; eg, clitellar glands. Fig. 29. Reconstruction (from camera tracings of a series of transverse sec-tions) of a spermatheca, seen from behind. Klein, haem. X 195. ep, externalopening lined by columnar epithelium; gl, posterior one of the pair of glands;slm, external layer of (longitudinal) muscle fibres, present on proximal portiononly; i, inner, and 0, outer limb; bn, longitudinal m
. Journal of morphology. e ovum; n, its nucleus; oe, epithelium of ovipore passing into the perito-neum ; cm, circular muscle fibre, between two of which the external opening is situ-ated ; Im, longitudinal muscles; eg, clitellar glands. Fig. 29. Reconstruction (from camera tracings of a series of transverse sec-tions) of a spermatheca, seen from behind. Klein, haem. X 195. ep, externalopening lined by columnar epithelium; gl, posterior one of the pair of glands;slm, external layer of (longitudinal) muscle fibres, present on proximal portiononly; i, inner, and 0, outer limb; bn, longitudinal muscles of body walls; n, nervecord. Fig. 30. Transverse sections of the inner limb of a spermatheca near its blindend. The muscle fibres are here cut obliquely or transversely, owing to theirspiral disposition. The appearance of the inner and outer zones in the epithelialcells is shown, and the several nucleoli and indications of an intra-nuclear net-work. Haem. X 840. Fig. 31. Omitted. Jounud ofMorpIwlogij JMJnst yWernfriMnter, FrxrJtfuTt 9-^ 540 /. PERCY MOORE. EXPLANATION OF PLATE XXXIL Fig. 32. Surface view of a portion of the circular muscle coat (the longitudi-nal muscle fibres are supposed to have been removed, with the exception of one oneach side) of the undivided region of the spermatheca. Haem. X 840. Fig. 33. Longitudinal section of the anterior nephridial vesicle. Borax car-mine. X 500. c, the posterior chamber, which would be in communication withthe anterior chamber in a section exactly through the median line; m, muscularcoat, chiefly of circular fibres. Fig. 34. Terminal portion, with external pore, of posterior nephridium; en faceand in profile. Free-hand sketch from a living specimen. X about 275. Fig. 35. Portion of terminal segment of tubule of the anterior right nephrid-ium, at the point where it passes from the body cavity into the inter-muscularspace. Sketch from a living worm. X about 350. The position of the nucleimidway between the late
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Keywords: ., bookcentury1800, bookdecade1, booksubjectphysiology, bookyear1887
