[504] 
the Tails grew To near, that the Return of both feemed 
to point to one Vent, tho’ as I obfcrvcd, the Anus 
was deficient. It had three Kidneys, one of them 
very large in proportion to the other two; fo that 
I apprehend there was a Conjunction. 
I fend you this Account whilft the Matter is frefh 
in my Memory, and am, 
\ Dear Sir, 
Tours , ire. 
P. Doddridge. 
IV. AbjlraEl from a Letter fent by Monfeur 
Buffon, Member of the Royal Academy 
of Sciences at Paris, to Martin Folkes 
Lfq\ Pr. R. S. concerning his Re-invention 
of Archimedes’s Burning Specula. 
Read^ Oft. 27. A 5 w hat I read fome time fince to 
X. JL olir Royal Academy upon the Sub- 
ject of my Re-mvention of Archimedes's * burning 
Specula , cannot appear in our Memoirs before the 
Year 1747, I think of publifhing by themfelves my 
Obfervations upon thefe Mirrors, as foon as I fhall 
fatisfy myfelf upon certain Particulars, by fome new 
Experiments I am now preparing to make. The 
Speculum I have already conftrutted, and which is 
but fix Feet broad and as many high, burns Wood 
at the Difhnce of 200 Feet, it melts Tin and Lead 
at 
* See thefe Tranf, N°. 483. 
