254. ANIMAL REPRODUCTIONS: 
their limbs, though the parts of thefe two mein: 
bers are fo different from each other. Therefore; 
if the four limbs and tail of a newt, already re- 
produced, are amputated, other four limbs and 4 
~ tail will regenerate a fecond time ; and this ex- 
periment may be confiderably protracted. In- 
deed, with young water newts, where the repro- 
ductions were prompt, I obtained fix fucceflivé 
reproductions of the limbs and fix reprodudtions 
of the tail during the months June, July, and 
Auguft. In one of thefe animals, I counted fix 
hundred and eighty-feven bones reproduced. 
In confequence of thefe reproduétions in 
earth worms, tadpoles, and newts, I thought 
of trying whether they would fucceed in {nails ; 
and, for that purpofe, mutilated feveral, fome 
of the horns, and others of different portions 
of the head, or the whole; and I cut off 
whatever parts were renewed, exactly where 
they joined the old trunk. The fecond repro- 
duction did not fail to take place and fucceed in 
the fame manner as the firft ; and this alfo hap- 
pened with a third reproduction ; but the death 
of the fnails prevented me from extending thefe 
curious experiments further. 
Another fuggeftion occurred, befides this en- 
quiry, which was to inveftigate whether the re- 
productive powers could at laft be exhaufted, or 
whether they would always fucceed, fo long as 
the 
