■^2 *Th^ Bifhof of Landaff on OrkhakmH. 



Amhroje, bifliop oC Milan in the fourth century 

 fays, that copper, mixed with certain drugs, was 

 kept fluxed in the furnace till it acquired the 

 colour of gold, and that it was then called 

 Aurichalcum.* Primq/ius, bifhop of Adrumetum in 

 Africa., in the fixth century, obferves, that Auri- 

 chalcum was made from copper, brought to 

 a golden colour by a long continued heat, and 

 the admixture of a drug, f Ifidoras, bifhop of 

 Semlle in Spain, in the feventh century, defcribes 

 Aurichalcum as poflcffing the fplendour of gold, 

 and the hardnefs of copper, and he ufes the very 

 words of Primafius refpefting the manner of its 

 being made. J The drug fpoken of by thefe 

 three bifhops was probably cadmia. Prepared 

 cadmia is highly commended by Pliny as ufeful 

 in diforders of the eyes,|| and it is ftiil with 

 us, under the more common appellation of cala^ 

 mine, in fome repute for the fame purpofe. 

 Hence, confidering the tcftimonies of Fejlus and 

 Piiny to the application of cadmia in making 



* JEs namq; in fournace, quibufdam medicaminibtrs 

 admixtis, tamdiu conflatur, ufq: dum colorem auri acci- 

 piat, et dicitur aurichalcum. Amb. in Apoc. G. 1. 



•f- Aurichalcum ex sere fit, cum igne multo; et medica- 

 mine adhibito, perducitur ad aureum colcrem. 



Pfima. in Apo. C. I. 



X Aurichalcum dlftum, quod et fplendorem auri, et duri- 

 tiam jeris poffideat, fit autem ex rcre et igne multo, ac medi- 

 caminibus perducitur ad aureum colorem. Ind. Orig. 

 11 liift. Nat. L. XXXIV. C. lo. 



cithei; 



