cone

(kén) (Gr. κῶνος; L. co’mus}]. Α solid figure or body tapering to a point. adjusting c’s, a pair of hollow cones used in measuring the distance between the axes of the eyes when they are parallel. antipodal c., the cone of rays opposite the spindle-fibers of the amphiaster. attraction c., a small cone-shaped projection from the surface of the ovum at the point where the spermatozoén attaches itself. Haller’s c’s, the coni vasculosi. implantation c., the cone-shaped insertion of a neuraxon in its neuron. keratosic c’s, horny elevations on the hands and feet in gonorrheal rheumatism. c. of light, the triangular reflection of light. seen on the membrana tympani. ocular c., a cone of light in the eye, the base being on the cornea, the apex on the retina. ret: c’s, the specialized outer ends of the visual cells: these 16 Of the nature 241 Excision or division of a‘ CONGESTION with the rods form the second of the ten layers of the retina. visualc. Same as ocular c.