FRESH WATER POLYPE (HYDRA) 



PLATE X- 



Fig. I Jfyctra, viridie 

 or Common. 



CrfZr oTOu. Ectoderm 



Fig. 2 Hydra, 



erLona armed, ffyctryi 



Fi . 7. Jape SpcrmaJl0y*^*n' <& Ovum/ or 



viricti* 

 ^Ripe-Ov 



C StufTTwntett 0vum.-so-eaHed, 'egg ' 



Diagram 2. -Development of Hydrozoa 



c Station ' 



b . Section- of Manila.' 



* -Qtrminol. 



\Germuial spot 



EARTH-WORM (LUMBRICUS TERRESTRlS) 

 Fig 2._Thefi'fleen Anterior Segments -Ventral aspect. 



'Mouth, 



