5S CHAPTER 31. 
and of all other branches of natural know- 
ledge. His difcoveries in the Cryptogamia 
clafs were numerous. 
Of Dr. Kreig, I can give no further 
account than that he was of Saxony. I con- 
jefture, that after his return from Mary- 
land^ he retired into his native country. He 
was the friend and correfpondcnt of Dale 5 
who, in his Fharmcicologia^ introduces his 
name in the moft refpedful m.anner, for 
notices communicated by him j and ranks 
him among the few eminent men of the time, 
who excelled in the knowledge of the Ma- 
teria Medica and Chemiftry. Dr. Kreiq 
w^as not living v/hen Dale publifhed the 
third edition of the above-mentioned work, 
in 1737. 
Dr. Kreig com.municated to the Royal 
Society, An Account of Cobalt and the 
*^ Preparation of Smalt and Arfenic^,'' ac- 
cording to the procefs ufed at the mines of 
Shnecbergh, in Hermanduria. It was printed 
in the Fbilofophical TrariJliBioiis^ N"" 293, 
VoL xxiv. p. 1754; with figures of the 
Furnaces. 
CUNNINGHAM^ 
