170 Mr. Lightfoot^s Account , &c, 
table fubftance of the rejinous kind ; for they bubble a little en 
being burnt on a hot iron, and when triturated diffolve llowly 
in a warm fpirituous menftruum to a fweet-fmelling vifcid mat- 
ter, But we muft wait for a better elucidation of the fubjeft 
from thofe who collect thefe fubftances in their native place. 
I have the honour to be ? with the utmoft refped, &c. 
JOHN LIGHTFOQT, 
