After

(af-ter) [A. S., after, back]. I. The anus. The buttocks. 2. Next in succe ion. A. -Action, the negative variation in an electric current continuing for a short time in a tetanized muscle. A. -Birth, the popular designation of the placenta, cord, and membranes. A.-Brain. See Hindbrain and Metencephalon. A. - Cataract, Cataract a Secund aria; an opacity of the media of the eye after operation for cataract due to opacification of the capsule or to non-absorption of the remains of the lens-substance. A. -Hearing, a condition in which sounds are heard after the wave-motion that produces them has ceased. A. -Images, continued retinal impre ions after the stimulus of the light or image has ceased to act. A positive after-image is a simple prolongation of the sensation; a negative after-image is the appearance of the image in complementary colors. A. -Pains. See Pains. A. -Perception, the perception of a sensation after the stimulus has pa ed away. A.- Sensation, a sensation lasting longer than the stimulus producing it. A. -Taste, a gustatory sensation produced some time after the stimulus has been removed. 37