[The above woodcut was designed by Dr. Ludwig Becker, and engraved by Mr. Grosse, 

 on the native wood, Cattistemon sal/gnus, which proves to be fully equal to European 

 boxwood for the purpose of wood engraving.] 



EXPLANATION 



Of an allegorical figure of the aboriginal discoverer of clay in the 

 regions of the Andes. 

 The discoverer, placed on the metal aluminium (the base of ter-sili- 

 ate of alumina), is in the attitude of contemplating the clay held in 

 his right hand ; in his left hand is seen a branch or stake, the imple- 

 ment used on the occasion of finding the clay. Gold being the first 

 native metal discovered, is seen next to the aluminium. Copper 

 then follows, a,nd next to this, an alloy of copper and gold. Tin, 

 produced from the oxide of the metal, follows ; and below this, the 

 alloy of tin and copper, viz., bronze. Crystallized or cast iron, placed 

 on malleable iron, resting on steel, concludes the pedestal. The 

 figure is made of silver; the engraving shows about half flie size of 

 the whole. Here therefore is represented tb# discoverer of clay, 

 having under his feet the substances, then unknown, but destined to 

 become the means for future material civilisation. 



