[ s 5 9 1 
Proprietor, caufed another Hole to be funk 1 6 Feet deep, 
and by driving a Level OF, fee Fig. i and 2, he broke 
into the Middle of the Fornax and, having cleared it of 
Rubbifh, found its Dimenfions as above, and that the 
Bottom of the narrowed Part between jFand G, was 
raided 1 8 Inches higher than the Bottom of the Part 
between E and F. 
The Pmefurnium was covered over at Top with a 
large flat Stone. 
The Fornax , and the Two fquare Pillars in the 
Alveus fronting the Opening of the Fornax , were 
greatly- impaired by the Fire, which muft have been 
very violent : Some fmall Fragments of Wood-coal, 
were thrown out among the Rubbifh in the Bottom 
of the Fornax ; whence probably it was heated with 
Wood. 
At the Conclufion of the Account Mr. Sympfon 
fent to Mr. Willis , he gives us the following Re- 
mark upon a Paffage in the fecond Letter from Mr. 
Baxter to Dr. Harwood , concerning the Hypocaujla 
of the Antients, printed in thefe TranfaElions, 
N° 306. 
“ Mr. Baxter fays, the Hypocanfis was called Al- 
“ veus and Fornax : But, with due Deference to that 
<c learned Gentleman, (fays Mr. Sympfon) I humbly 
“ apprehend them to have been diftinCt Parts of the 
“ Whole, which was called Hypocaufls : The Ground 
<e of my Conjecture is this: In the firfl Place, it 
“ would hardly be poflible to make a Fire in that 
“ Part of this Hypocaufl , which I call the Alveus 
u much lefs to come at it, to manage it, being fo 
“ low, and fo crowded with Pillars, as to admit only 
c y a (lender Perfon to crawl amongft them, and that 
5 T “ not 
