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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 Trariflation by Mr. Engedrom, 

 reviled and corrected by me -, which neceflanly 

 demands lbme explanation, in juftice to us 

 both. It is as follows: 



Mr. En^eftrom, a Swedifh gentleman of 

 great merit and learning, particularly in the 

 (cience of Mineralogy, amufed hitnfelf with 

 translating Mr. Cronfiedt's celebrated Syjiem of 

 Mineralogy. 



On Mr. Engeflrom's return to Sweden, this 

 tranflation became the property of Meffieurs 

 Dilly, by whom I v/as employed to revife and 

 correct it; as it could not be expected that Mr. 

 Engeftrom, being a foreigner, was capable of 

 giving a correct tranflation in regard to lan- 

 guage, or to a proper application of fcientifical 

 names. 



I have therefore carefully corrected 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 diltingui(h them from thofe of 

 Mr. Engeltrom, marked E. 



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