<5() STATER OF PHILI* OP MACEDOff. 



The gold of the river Ceze is at 18 car. 9 grs 

 Khone..** 20 



Rhine 21*25 



Arriege . • • 22*25. 



Lumps or na- J|e Further observes, that- .the fineness varies in the same 



homogeneous. P iece of native S old - Ke savs > that tne P ,ece of 56 marts » 

 which was seen at the Academy, was in one place 23 carats 

 and half, in another 23 carats, and in another 22. The 

 piece of 63 marks belonging to father Feuillee was at its 

 upper part 22 carats 2 grs ; a little lower, 21 carats, \ gr. ; 

 and at two inches from the bottom only 17 carats and half. 

 (Reaumur's grain is a twelfth of a carat, a division used in 

 Germany.) 



Wicklowgold. ft!,-. G. A. Deluc announced in the Journal de Physique* 

 vol. LIT, p. 205, that pieces of gold, found in the county 

 of Wicklow, in Ireland, contained a ninth of their weight 

 of silver, without any other alloy. 



? iece belong- My father, having been appointed to assay the piece of 



academy. native gold belonging to the academy, during the time of 

 the revolution, made two assays of it, both of which were 

 23 car. 26 thirty-seconds. This comes very near to pure 

 gold; and proves, that gold is found in rjature alloyed with 

 very variable quantities of silver. 



Pure native Mr. Fabbroni is the first who has demonstrated, that gold 



is found also quite pure. This is an important observation ; 

 -' but it does not seem to me to overturn the general principle, 

 that native gold is a natural alloy of gold and silver : a prin- 

 ciple established by a great number of facts, add to which 

 only one exception is yet known. 



Presence of It is desirable, that the presence of lead should be sought 



lead in ancient *. . • . « _ii -i u.-i . 



coins to be form ancient coins or medals : as this would be the most 



s*«ght. certain method of ascertaining, whether the ancients refined 



their gold, or employed it as nature gave it therq. 



w. 



