ANIMAL AND VEGETABLE 



125 



ANIMAL 



VEGETABLE 



Fig. 60. 



Endothelium of a serous mem- 

 brane (human). (After Schafer.) 



Fig. 61. 



Cells from a tendril of Cucurbita 

 pepo. (After Slrasburger.) 



Fig. 62. 



Section across a nerve bundle in 

 the second thoracic anterior root 

 of the dog. (After GaskeU.) 



Fig. 63. 



Transverse section through a 

 young internode of the shoot axis 

 of Tradescantia albiflora. (After 

 De Bary.) 



