ANIMAL REPRODUCTIONS. 41% 
periments and obfervations very much diverfi- 
fied. 
With regard to internal moulds, 1 think as un- 
favourably of them as of plaftic forces. It mutt 
be remarked, that what are called moulds, are 
not fimple cylinders or folid cones, but hollow 
tubes, nice textures, and the like. But, inde- 
pendent of this difficulty, where could be the in- 
ternal mould of a hand, a foot, an eye, or brain, 
which no longer exift in the animal, but will 
neverthelefs be completely reproduced? Do not 
let us confound the fecretory organs with 
moulds ; to {peak correctly, they form nothing ; 
they only feparate certain molecules for certain 
ends. 
Thus, becaufe I am unacquainted with any ex- 
planation merely mechanical, that will account 
for the leading phenomena, I admit, that in the 
interior of the members of the newt, there are 
germs deftined to repair the loft parts. 
My experiments feem to prove, that there are 
different claffes of thefe germs, and that they are 
not fortuitoufly difperfed in the interior of the 
members, but diftributed in regular order, rela- 
tive to the different poflible privations. 
That there are various {pecies of germs, feems 
to be afcertained, from attending to what enfues 
in the reproduction of the hand and foot, com- 
pared with what fucceeds in reproductions of the 
fingers 
