BUDDING IN HYDRA. 



213 



(Fig. 8, cct). They become more narrow, elongated and present 

 the appearance of glandular cells. They have the power to 



FIG. 7. Longitudinal section at junction of parent hydra and bud, taken 

 at a in Fig. 6. end., endoderm. X 100. 



FIG. 8. Longitudinal section through base of mature bud and wall of 

 parent hydra. ;,, mesoglea of bud; -m, mesoglea of parent; ect., glandular 

 ectoderm ; ent.. enteron of bud. 



FIG. 9. Longitudinal section showing change of mesoglea in separation of 

 parent and bud at a, and formation of new mesoglea at b and c. The endo- 

 dermal cells at proximal end of bud have united, a, mesoglea between bud 

 and parent becoming thinner ; b. new mesoglea of bud ; c, new mesoglea 

 of parent. 



FIG. 10. Longitudinal section showing completion of mesoglea at b and c 

 and persistence of old mesoglea at a. 



