RT TAS eta eer CR 48h 
More than’ninetéen twentieths of the animals and vege- 
‘tables which are known‘to us are regencrated’*by means of 
certain ‘effential parts, inherent ur'their organick conflitu~ 
tion. ' Thefe parts or organs of generation are fo apparent, 
and fo eafy of: deriotftration, that ‘no plaufible fyftem can 
be founded on the contrary hy pothelis. This 1s not the 
tafe with thofe individuals the organization of which 1 
more fimple, and of which the fexual parts efpecially are 
fo extremely minute, and fo concealed’ from the eye, that 
they have’hitherto efcaped the obfervation of p philofophers. 
Hence have fprung thofe more or lefs ingenious, but al- 
ways erroneous, fyftems, which, at the fame time that 
they do credit to the genius of their authors, are clearly 
repugnant to reafon. Wence, thofe numerous differtati- 
ons filled with captious reafonings, and in fome refpecs . 
not without depth of refearch, but in dire@ oppofition to 
the eternal laws of nature. Hence, again, the endea- 
vours of fome fyftematical men, to deftroy that principle 
fo generally recognized, and which fo many facts concur 
to demonftrate, omne vivum ex ovo. 
rpiyteick cadet the very great probability of the rege- 
neration of all animals by the conjunction of two indivi- 
dualsof different fexes, as in quadrupeds, in birds, and in 
infeéts; or by the afperfion’ of the feminal liquor of the 
male on the fpawn ejected by the female as in the fithes; 
notwithftanding it is proved to demonftration, that the 
feed of vegetables are fecundated by the pollen of the an- 
there; notwithfianding the conviction of thefe and many 
other fads, ‘equally well known and afcertained, ftill fome 
philofophers refufe to extend this principle to the whole 
of the animal and vegetable creation. The fimplicity and 
minutenefs of the organs of worms, and efpecially of the 
polypi, and the fingular faculty which fome obfervers have 
attributed to the latter of regenerating themfelves by the 
: Cre 2 fection 
a 
