14 



/'hint Tissue Cult/ire 



**Msl8& 



Pig. 3. Segments of larvae of Bana palustris (left) and R. 

 sylvatica (right) having differenl pigmentation, grafted together 

 in the early embryonic stages. Each retains its own specific char- 

 acteristics in intimate anatomical and physiological contacl with the 

 other. Al the right, progressive stages in development. At the 

 upper left, histological detail of the region of union between the 

 two. Compare with Fig. 2. (From Earrison, R. G. L904. Ark. 

 in ik. An.-ii. 63: 35 L49, US.) 



