240 CHAPTER 46. 
v^^ithout fome difficulty, as they lie at the 
depth of from two to three feet. At an-^ 
other time he was more fuccefsful, and col- 
ledled near a bufliel at once. He defcribea 
them to his friend, under the name of P//- 
las, or globular Balls of Mofs, of the fize of 
a tennis ball. 
Mr. Tiomas Knowlton was a man of 
general curiofity and obfervation ; and, a- 
mongft other matters, not inattentive to the 
purfuits of the antiquary. 
We find Extrad:s of Two Letters from 
him to Mr. Mark Catesby, F.R.S. 
concerning the Situation of the ancient 
" TownDe/govIa'a, and of two Men of aii 
" extraordinary Bulk and Weight." PM, 
Tra?2f. Vol. xliv. p. 100. This Roman fta- 
tion was difcovered on theV/olds, within 
two miles of Fockllngton, Alfo, 
" An Account of tw^o extraordinary Deers 
Horns, found under Ground in different 
Parts of TorkpireJ" Phil. Tranf. Vol. 
xliv. p. 124 ; with figures. Thefe were of 
two kinds : one feems to anfwer to the fi- 
gure of an horn, as defcribed in PhiL Tf^mf, 
W 422. p. 257 ; the other was adjudged 
to 
