482 THE NERVE DISTRIBUTION IN THE EYE OF PECTEN IRRADIANS. 



Fig. 2. The peripheral part of a median section stained with methylen-blue. The side branch of the optic nerve 



does not really show in this position. It was added to show its relation to the external ganglionic cells. 



A few only of the fibres of one of the external ganglionic cells are drawn to show their appearance and 



distribution. 

 Fig. 3. The chief morphological elements of the retina, drawn from preparations stained by methylen-blue and 



other means, and studied with an oil immersion and magnification of 2,500 diameters. 



