ORIGIN OF MONSTERS 



505 



vitreous body only barely suggested. The retina, while being 

 well differentiated, is abnormal in some of its layers, which are 

 to a considerable extent intermingled with the fibrous layer. 

 Some of the retinal layers of the two optic cups are continuous 

 in sections through the anterior part of the eye (fig. 45) while 

 no such continuity can be observed more posteriorly (fig. 46). 

 Two optic nerves are seen to pass out of the eye in few and loose 



ts* 



Fig. 46 Camera lucida drawing of a more posterior section through the eye 

 of the same embryo (region of optic lobes), t.s., tissue spaces; e.oe., extra- 

 cerebral oedema; o.c, optic cross, mb., mandible. X 173^. 



