( 34<5 ) 
Now by this Account it appears, that it is not much 
above 200 Years fince thofe Shoes, before defcribcd. 
were worn , and confcquently it cannot be much lon- 
ger, fince the Earth hath been raifed there to the Thick- 
nefs before mentioned, of 10 or 12 Foot 5, and 
fince Bicker Haven grew up to be (as now it is) higher 
Land than the Country on each Side of it. By which 
may be conjedured, what a Change a Century or two 
more may make in the Out-falls of the Rivers of JVi- 
thatn, Welland, Njne and Oufe'^ and confcquently the 
Neceflity of taking fome other Method for preventing 
the impending Mifchiefs, which threaten the Naviga- 
tion of the faid Rivers, and thofe who have Efiates 
and Interefts in the great' Level of the Fens, and are 
concerned about the Draining of them. 
IX, An Account of a monjlrous double &rth in Lor- 
rain. Communicated to the Tublijher by Mr, Co- 
lin Mac hzunn/Prof Math. Abredon. 5^. vS. S. 
I The Under written, Surgeon in Ordinary to his Royal 
Highnefs the Duke of Lorrain, certify, that on the 
lafl of December, 1722, I went by his Orders to Domp 
Remy la Pucelle, to lee there SebaJUana Camus, aged 44 
Years, delivered on the z4th of the faid Month, being 
Chrtjlmas Eve, about eight o’Clock in the Evening, of 
two Children, or Twins, joined together in the Man- 
ner as appears by the Draughts, (Fig* i, 2.) viz. 
There is one Head, one Neck, one Breaft, one Abdo- 
men, and two Hands on one Side , and there are as 
many Parts on the other • the whole being well pro- 
portioned and plump, joining together by the Belly, 
which is common to both, fo that one of the Heads is 
3 in 
