C 3 
the Head of a Toal, which is double, and has three 
Eyes. 1 have a Turkijh Duck, which is double, the 
two Bodies are joined by the Bread 5 each Body has 
two Wings, and two Legs 5 but they have only one 
Neck with one Head. 1 keep a Chicken, which has 
a fccond Rump fixed to its Bread, with the two Legs, 
and two Paws. I even have a Frog, which befides 
its four Paws, has a Fifth as well formed as the 
others, which comes out at the Right Shoulder. The 
Produdtion of all thefe Monders that are double, or ? 
have fuperduous Members, may very well be occa- < 
fioned by two Animalciila entring into the fame 
Egg i they touch, they clofe, they unite, they crowd 
each other : The Parts of the weaked, being too 
much crowded, cannot extend nor difplay themfelves ; 
fo they vanifh, as it were, fo much the eafter as they 
are extremely tender, and without any fenfible Con- 
fide ncy. 
It is not more difficult to find plaufible Reafons 
for imperfedt Monders, or that have an odd Con- 
formity, as to the Whole, or as to fome of the Mem- 
bers. I have the Foetus of a Sheep which has no 
Nofe j the Part where the Nodrils ffiould be, feems 
to be flayed, and the two Eyes are there one by the 
Side of the other. On the Forehead there is a fmall 
Trunk of about an Inch and a half long, and pierced 
at the End by two Noflrils. I have another, which 
has but one Eye in the Mid.dle of the Forehead. I 
have a human Foetus of about feven Months, which 
has no Mark of the Sex, and indead of the Legs 
there is a Bag that runs to a Point, the Extremity 
of which is cartilagineous : In that Bag there is a 
Bone three Inches long, covered with a mufcular Fleffi ; 
it 
