LABORATORY SUPPLIES AND CHEMICALS 



157 



2866 



2868 



2866 FURNACE, Fletcher's Monitor. A form of Gas Assaying Furnace, sug- 

 gested by Walter Lee Brown. In this furnace the flame rises from 

 the burner, shown on the left of the engraving, and passes horizon- 

 tally through the body of the furnace to the chimney. The exterior 

 dimensions are 20 inches long, 7 inches wide, and 5 l /2 inches deep. 

 As there is no direct heat under the floor of the furnace, a platform 

 is furnished on which scorifiers or cupels are placed. The heat pass- 

 ing under as well as over the platform, the articles placed thereon 

 are heated quickly and evenly. The Monitor, as represented in cut.. $20.00 



Prices of separate parts 



Fire-clay Slabs for covers, each $ 0.50 



Body of Furnace 8.50 



Platform 15 



Supports for Platform, each 05 



Tripod 50 



No. 16 Burner 9.00 



Chimney Pipe, per length 35 



2868 FURNACE, Fletcher's Muffle, a gas furnace for assaying, enameling, and 

 all purposes where exact temperatures are required, not exceeding the 

 melting point of copper. 



Size No. 3, with No. 15 burner. Inside muffle space, 3x4x2^ in. high. 

 Requires ^-in. bore gas pipe and tap. Clay parts, 734x734x8 in. Inside 

 space, 5J4x534x5}4 in. high. From table to top of lid, 16 in. Weight, 

 as illustrated, 60 Ibs 20.00 



2870 FURNACE, Fletcher's Muffle. Size No. 4, with No. 4 burner. Inside 

 muffle space, 3^x5^x3 in. high. Requires 34-in. clear bore gas pipe 

 and tap. Clay parts, 10x9x11 in. Inside space, 7^x6^x534 in. high. 

 From table to top of lid, 19^ in. Weight, as illustrated, 88 Ibs 26.00 



2872 FURNACE, Fletcher's Muffle. Size No. 5, with No. 5 burner. Inside 

 muffle space, 4^x6^x4 in. high. Requires 1-in. pipe and tap. Clay 

 parts, 1124x1034x14 in. Inside space, 834x734x634 in. high. From table 

 to top of lid, 23 in. Weight, as illustrated, 145 Ibs 40.00 



2874 FURNACE, Fletcher's Muffle. Size No. 6, with No. 6 burner. Inside muffle 

 space, 6x8J^x4/^ in. high. Requires 1-in. clear bore gas pipe and tap. 

 Clay parts, 14xl5J4xl7J4 in. Inside space, 10^4x9^x8^4 in. high. 

 From table to top of lid, 27 % in. Weight, as illustrated, 225 Ibs 50.00 



