( ) 
Idea I have of this Matter ^ but ’tis with humble Submifli* 
on to your Cenfure and Correction : Craving leave to am- 
plify a little on this fubjeCt, By reciting what of the 
kind hath b^en by feveral others difeover’d, and conli- 
dered. 
Such Extra- uterme Embryos have been fometimes found 
in Women ^ but not publickly taken notice of ’till the be- 
ginning of the laft Century, by the younger Riolan, nt 
Jupra, with this Remark: (Speaking of the Fallopian 
Tubes) They appear, faith he, of the fame Nature and 
Subftance as the Womb, ^ia carnofa eft, in qna^ quod 
fft mlrabile^ fotumHnmamimconcipi fait obfervatum. Then 
gives an account of four fuch ftrange Conceptions, which 
/ occured to his Knowledge. 
Since which time, more marvelous ones have happen’d 
in that Country ^ two of them much amufed the Curious 
every v/bere. One was found at January ri66^., 
by Mr. B. Fefal, in the right Tube of a Woman. It was 
four Months old, and fo grown, and the Tube fo di- 
ftended, as made him miftake it for another Womb, and 
accordingly to call the Account he pnblifhed thereof, 
Demonjiration d*une double Matrice. Mr. Oldenburgb 
put an Extract of it into the Philnfaphical TranfaHionsy 
No. 48. and the German Academy, Vol. i. Obf. iio. did 
the like; But neither feem’d to underftind the Myhery, 
’till de Gracff took it right, and made ufe of this very 
Obfervation to illuilrate and confirm the Hypothefis of 
Kii'kringiiis. And foon after Elfioltins, a learned Ger- 
man, did rhe fmie in a little but curious Tra6t, De con- 
ceptione Tubarla, qua Humani Feetus extra Uteri cavitatem 
in tubis quin deque concipiuntur. He recites the Story as 
from Mr. Vejal, and gives the Figure of the fiippofed two= 
Wombs and the Feetus in the diffended Tube^ and a- 
among other fuch Conceptions, mentions two large Ma- 
tas lound'wi hout the Matrix of one Woman- 
About 
