254 ^- T. Young, The Histogenesis of Cysticercus pisiformis. 



Fig. 56. Enlargement of cell ?im, Fig. 58. 2200: 1. 



Fig. 57. Section of main lateral nerve trunk in neck region of 

 larva, showing lateral branches, x branching nerve fibre. From a TOWEK 

 preparation. 1200 : 1. 



Fig. 58. Innervation of muscle thru a neuro-muscular cell, from 

 neck of larva. 1000 : 1. 



Fig. .59. Connection between a neuro-muscular cell and a muscle 

 from neck of larva. 2850 : 1. 



Fig. 60. A group of cells including a neuron x, and four parenchyma 

 cells from the periphery of a main lateral nerve trunk of Taenia serrata. 

 1100: 1. 



Fig. 61. Section of main lateral nerve cord in neck of larva, showing 

 one of the cord neurons. 1200 : 1. 



Fig. 62. Part of Fig. 63 enlarged. 2850:1. 



Fig. 63. Developing lateral cephalic ganglion from scolex ot larva. 

 The stage of development here shown is considerably older than that 

 shown in Fig. 65. x denser protoplasmic region in a neuroblast, possibly 

 a developing nucleus, x^ neuroblast with small unstained area. 1000 : 1. 



Fig. 64. Three neurons from lateral cephalic ganglion of Taenia 

 serrata. The different nuclear pictures presented by each cell are of 

 interest. In x the nucleus fills nearly the entire cell. In x^^ is a similar 

 mass of nuclear matter, presumably about to separate from the parent 

 cell. 1100:1. 



Fig. 65. Lateral cephalic ganglion in an early stage of development. 

 1000: 1. 



