ANIMAL REPRODUCTIONS. 283° 
rtherefore, my experiments were to be made: 
but, recolleéting Sig. Plateretti’s obfervation, 
‘that violence done the animals for this purpofe 
«is fatal, and frequently makes the experiment 
© fail, I delayed until July, and then broke the 
“operculum ; and, having put them on grafs, I 
¢ found the whole alive, but the reproduction un- 
< equally advanced as in the firft. Only two with 
“ the vertical cut furvived ; one horn was renewed 
“on a whitifh globular fubftance, projeCting from 
~¢ the trunk of one; and the head of the other 
<feemed to be completely regenerated. The 
¢ two large horns were of different lengths. In 
é the five cut obliquely, reproduction was a fhape- 
<jefs lump, which had not yet acquired its pro- 
‘per configuration. ‘The horns of fome wer¢ 
« regenerated, and in various {tates of advance- 
‘ment; while, in others, they did not even bud. 
© As I remarked the fame variety in thefe ex- 
¢ periments that occurred in the firft, when the 
‘ fe€tions were fimilar, I inclined to think the 
é inequality of the produétive power, acting dif- 
‘ferently on different individuals, as well as its 
€ inequality of action on different parts of the 
‘ head, were independent of the cut. But refleét- 
¢ ing that the laws of fuch phenomena ought not 
¢to be determined by few, but by numerous 
§ and repeated obfervations, J conceived it better 
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