36 THE PINEAL ORGAN 



One of the most important deductions to be made from these 

 experiments is, that since they have been carried out on fertilized embryonic 

 material which was primarily normal, the anomalies have been produced 





Fig. 28. — A Cyclops Lamb (C. Rhino- 



CEPHALUS) VIEWED FROM IN FRONT. 



The tubular projection which springs 

 from the frontal region is the 

 " proboscis " ; the single nasal 

 orifice showed traces of its bilateral 

 origin by fusion of the right and 

 left nostrils. In the centre of 

 the face is the single palpebral 

 aperture, and the median eye, 

 which was formed by the fusion 

 of the outer parts of the right and 

 left eyes. There were two corneae 

 and two lenses, but a single optic 

 nerve. All the median structures, 

 the septum of the nose, the internal 

 orbital muscles and their nerves, 

 were absent. 



Fig. 28A, b— Head of Cyclops Calf. 



A — View from the front. 



B — Seen from the side. 



(An artificial glass eye has been inserted into the eye-socket of the cyclops.) 



