[ 4 8 ] 
the cafe, if I had been troubled with only a fcorbu- 
tic corrofive humour. I mud: leave it to the learned 
in phyfic, to make what conclufions they think fit 
from this true hate of my cafe. I think I remember 
in fome of Dr. Whytt’s obfervations, that if the me- 
dicine would not break or bring away the ifone, it 
might cover it with a foft velvet coat, fo as to blunt 
the edge of it, and keep it from vulnerating any part 
of the bladder. This may probably be my cafe, if I 
have hill a hone there ; and therefore I continue to 
take daily a third part of the foap and lime-water, 
which I ufed, when I took the full quantity. 
X. ExtraEl of the Obfervations made in Italy, 
by the Abbe Nollet, F. R. S. on the Grotta 
de Cani. Tranfated fro?n the French by 
Tho. Stack, M. D . F. R. S. 
Read Jan. 24./ y \ HIS cavern, known fo long a time, 
I/5 °' J_ and celebrated by fo many writers, 
was probably called La Grotta de Cani, becaufe it is 
commonly on this fpecies of animals, that experiments 
are made for the curious, who viht it. It lies in the 
tide of a little hill on the eahern border of the Lago 
di Agnano, between Naples and Pozzuolo. It is not 
luffer’d to hand open, but is under the care of a man, 
who, at about an hundred yards from it, keeps a 
natural hove *, that is, a fmall building, level with 
the 
* Stofe di San Germano. 
