. The Journal of experimental zoology. Fig. 11 Diagram representing the direction of the turning when a specimenwith left eye removed is illuminated from different directions. A, dorsal view ofspecimen illuminated from different points in the frontal plane; B, specimen il- REACTIONS TO LIGHT IN PLANARIA MACULATA 95 In order not to confuse the reactions resulting from the illum-ination of one eye with those following from the illuminationof two eyes, all animals used in these experiments had one eyeremoved. The same specimens were used as in the precedingsection. Let us consider first the react
. The Journal of experimental zoology. Fig. 11 Diagram representing the direction of the turning when a specimenwith left eye removed is illuminated from different directions. A, dorsal view ofspecimen illuminated from different points in the frontal plane; B, specimen il- REACTIONS TO LIGHT IN PLANARIA MACULATA 95 In order not to confuse the reactions resulting from the illum-ination of one eye with those following from the illuminationof two eyes, all animals used in these experiments had one eyeremoved. The same specimens were used as in the precedingsection. Let us consider first the reaction of a specimen with the lefteye removed when the eye is illuminated from different anglesin the horizontal plane of the animal. If the beam of light comes from a point directly in front of theanimal, it turns the anterior end to the right, , toward thenormal or stimulated side (fig. 11, A, h). The same reactionfollows if the source of light is shifted slightly to the left of themedian line (fig. 11, A, a). As, soon however, as
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectzoology, bookyear1920
