

Fig. 7. One day old Campanularia hydranth. Gomori acid phosphatase 

 stain. Note strong nuclear stain and essential absence of strongly positive 

 small particles. Magnification=about 900X. (From Brock and Strehler, un- 

 published). 



Fig. 8. Ten day old regressing hydranth of Campanularia. Gomori acid 

 phosphatase stain. Both nuclei and a multitude of small cytoplasmic granules 

 give positive stain. 500X magnification. (From Brock and Strehler, un- 

 published). 



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