Mr. DA C O S T A’s 
PREFACE. 
I Should hardly have troubled the Reader 
with any Preface, had not the title page 
mentioned a Tranflation by Mr. Engeftrom, 
revifed and corredled by me ; which neceffarily 
demands fome explanation, in jufiice to us 
both. It is as fo lows: 
^ Mr. Engeftrom, a Sw^edifh gentleman of 
great merit and learning, particularly in the 
fcience of Mineralogy, amufed himfelf Vvith 
tranflating Mr. CrQnftedfs celebrate.d Syjiem cf 
Mineralogy, 
On Mr. Engeftrom's return to Sweden, this 
tranflation became the property of Meffieurs 
Dlily, by whom I was employed to revife and 
eorredl it; as it could not be expedted that Mr. 
Engeftrom, being a foreigner, was capable of 
giving a corredl tranflation in regard to lan- 
guage, or to a proper application of fcientifical 
names. 
I have therefore carefully corredled it In thofe 
particulars, and collated it with the German 
edition printed at Copenhagen in 1760; and 
the notes which occurred to me I have marked 
with D. C. to diftinguifh them from thofe of 
Mr. Engeftrom, marked E. 
a 
T H E 
