ANIMAL REPRODUCTIONS. 4ig 
#0, before they appear fully evolved(1). But 
we have no means of difcovering organic wholes 
fo minute, and of contemplating their fucceffive 
evolutions. 
Finally, the experiments on newts demonttrate, 
that the germs of different orders are not for- 
tuitoufly difperfed in the interior of the animals, 
but each placed relative to the fituation of the 
member whofe lofs it is to repair. Thus 
an arm, ora leg, never unfolds, where there 
fhould be a hand or a foot; nor do we ever 
fee a hand originate, where a finger only is de- 
fective. This is proved, by fimple infpection of 
the figures, and of 4, 5, 6, in particular. 
_ Tcannot think the reparatory germs are dg 
pofited in the offeous parts, or in thofe that may 
offify ; I rather fuppofe they are lodged in the 
foft parts, as more favourable to their evolution. 
While a germ unfolds all its parts, engraft, or 
anaftomofe with the correfponding parts of the 
original whole, and form one body with it; this 
union is evinced by the reparation of the muti- 
lated member, fince the new part exa¢tly re- 
fembles it. Something analogous to vegetable 
grafts takes place, as M. Duhamel has well de- 
faribed 
The 
ae 
(2) Vide Confiderations fur les Corps Qrganifés, chap. 
9. Haller, Memoire fur le Poulet, 
