156 ^^^^ Patents. 



Native gold from the mine ofGuamo, near Marmato. 



By analysis. By theory. 



Gold 73*68 3 atoms gold 7317 



Silver 2632 2 atoms silver i6 83 



10000 100-00 



Native gold of El Llano ; in small flattened grains, with a peculiar 

 red colour, and hence called Oro Colorado. 



By analysis. By theory. 



Gold 88-58 4 atoms gold 87-9 



Silver 11 •42 1 atom silver .... 12-1 



10000 1000 



Native gold of La Baja, near Pamplona. 



By analysis. By theory. 



Gold 88-1.5 4 atoms gold 87-9 



Silver 11-85 1 atom silver 121 



100 00 100 



Native gold of Ojas-anclias,from an alluvial mine in the province of 

 Antioquia. (It is in leaves of a yellowish red colour.) 

 By analysis. By theory. 



Gold 84-5 3 atoms gold .... 845 



Silver .... 15-5 1 atom silver .... 15-5 



100-0 1000 



Native gold of Transylvania ; in very pale cubic crystals. 

 By analysis. By theory. 



Gold 64-52 1 atom gold 645 



Silver .... 3548 1 atom silver . . 355 



10000 1000 



This is the Electrum of Klaproth, whose analyses gave Gold 64, 

 Silver 36. 



Native gold of Santa-Rosa de Osos, province of Antioquia, sp. gr. 

 14149. (Colour pale, with a green tint. J 



By analysis. Bv theory. 



Gold .■ 64-93 1 atom gold ' 645 



Silver 35-07 1 atom silver 35-5 



10000 1000 



LIST OF NEW PATENTS. 



To T. Don, of No. 9, Lower James-street, Golden-square, mill- 

 wright, and A. Smith, of No. 28, Wells-street, Oxford-street, 

 builder, for their methods of making shutters and blinds of iron or 

 steel, or any other metals or composition thereof, and improved 

 methods of constructing and fixing shutters and blinds of iron or 

 steel or any other metals or materials and methods of uniting in 



shutters 



