404 SILVER COINS. 



Hambro. cc=n : 12. A coin of Hamburg, dated IfSO. Obverse, the valu^ 



Silver 11, cop. ^^ ^^^ ^^^^ ^2 einen Thai. Reverse, a horse. This coin was 

 per 10. ' ' 



likewise giver, me by Mr. Hatcliett. It weighed 50.44. Its 



specific gravity was only 9*015 4. 



Muriate of silver, 33.53 gr.r:25.35 silver. 



Copper 22.71 



Loss 2.36 



50.44 



The great quantity of copper in this coin led me at first to 

 suspect that it might have been accidentally debased. This 

 made me anxious to examine another of the same i<ind. Pro- 

 fessor Jameson furnished me with one which he had brought 

 from Germany. The result was as follows : 



The saine coin, 13. A similar coin, rather smaller in diameter, but thicker, 

 rather worse, dated 179^. It weighed 46.7 grains. 



Muriate of silver, 31.52 gr.r:23.83 silver 



Copper 22.60 



Loss 0.27 



46.7 



Having been informed by Mr. Milligan, watch-case maker, 

 in Edinburgh, that the Spanish coins differed from each othe?" 

 in purity, I examined the two following. The first was fur- 

 nished by that gentleman as a specimen of the purest Spanish 

 silver coin ; the second was a common Spanish dollar. 



Spanish piste- 14. A Spanish pisterine of Philip V. dated 1740. If 



SHvVr 18, cop- ^^^§^^^99.07 grains. 



per 1. 



Muriate of silver, 120.30 gr. =90.95 silver 



Copper 5.53- 



Loss, including some gold ••'• 2.59 ; ' 



99.07 



J 5. A 



