56 ZOOPHYTES. 



flourishing ; and many buds in different stages appeared among them. 

 The least mature had a slight enlargement at the end of their respective 

 twigs ; and the most mature a dark ovular or ovoidal formation sustained 

 on a short neck. — the generating tube. The distribution, proportional in- 

 crement, and perfection of the renovating parts, rendered the aspect of this 

 group very interesting. Alike so were the subsequent changes. After 

 all the heads had fallen, no germination was perceptible on the 22d of 

 February. But fifty or sixty buds and hydrse appeared in forty hours, and 

 in another day that number had doubled. Almost all the twigs were 

 flourishing vigorously on the 2d of March. Above three-fourths of the 

 heads had fallen on the 8th ; and on the 10th, only one remained, which 

 went to speedy decay. In the next place, a few buds again protruded 

 from the extremities, on April 29 : several flourished from the tallest 

 stem on the 4th of May. Many irregularities ensued, but reproduction 

 was general on the 13th of June. 



The more minute the objects, the greater the difliculty of following 

 the progress of reproduction, whence fewer illustrations can be obtained. 



A branch, not exceeding three lines in length, had borne heads on 

 three twigs, *', y, z. The head x fell March 3, leaving the tube it had 

 generated an eighth of an inch long and lighter coloured than the rest. 

 A bud now rose visibly, within the cylinder, and burst on the 29th ; thus 

 requiring 26 days for maturity, — the head preceding it had required 23. 

 Having flourished 8 days, it fell April 2. Another head burst on May 3 ; 

 thence the reproduction occupied about 29 days. Its subsistence was 

 now more transient, for it fell in 6 days. A new bud, visible on the 11th 

 of June, burst with 24 tentacula on the 12th, or in 33 days from the de- 

 cay of its precursor, and it subsisted during 7. The twig flourished again 

 in 16 days, and the renovated hydra remained 10. But the neck by this 

 time becoming foul, no farther regeneration could be followed. So much 

 for the extremity x. The twig z, being vacant, alike, on March 3, did not 

 flourish until the 3d of May, that is, for 60 days, when the head then rege- 

 nerated subsisted 7. But now falling, it had no successor. The twig ?/ 

 generated a head 29th March, which head subsisted 7 days, but it produced 

 no more. 



