IV 
INTRODUCTION. 
times of thofe writers was every where de¬ 
fective. But, at prefent, as the Britifh na¬ 
tion has began to produce in this depart¬ 
ment of fcience alfo men of merit and 
activity, who advance with laudable ar- 
dour mineralogy and chemiftry in their 
own country, we may expeCt important 
additions to both thefe branches of natu¬ 
ral knowledge. In the mean time I will 
give as a iketch, the following fmall 
additions to the knowledge of fome cu¬ 
rious, and in fome refpeCt, little known 
foffils of Cornwall, which I received from 
my worthy friend, John Hawkins, Efq. 
with whom I had the pleafure of making 
fome of the following analyfes. 
MINE® 
