LABORATORY SUPPLIES AND CHEMICALS 



73 



2115g 



2115g BURNER, 

 2115h BURNER, 



2116 BURNER, 



2117 BURNER, 



2118 BURNER, 

 2120 BURNER, 

 2122 BURNER, 

 2124 BURNER, 

 2126 BURNER, 



2116 



2117 



2122 



2126 



Bunsen's, Micro, 2-inch high, tube %-inch $0.50 



Bunsen's, Micro, 3-inch high, tube ^-inch, nickel plated 60 



Bunsen's, with air regulator 30 



Bunsen's, central draught burner, open at bottom, avoiding 



danger of clogging gas orifice 30 



Bunsen's, with 2 tubes, and air regulators 1.50 



Bunsen's, with 3 tubes, and air regulators 2.00 



Bunsen's, with 4 tubes, and air regulators 3.00 



Bunsen's, with fork, to attach to support 1.50 



Bunsen's, with stopcock 1.75 



2127 



2128 



2130 



2131 



2127 BURNER, Boyce's. For gasoline or coal gas with regulators for air and 



gas. Height, 5 T / 2 inches $1.50 



2128 BURNER, Adjustable Bunsen, for burning gas of variable quality. The size 



of the orifice through which the gas escapes is adjusted by turn- 

 ing the milled cap-nut seen inside the arm which supports the 

 upright tube. Its adjustability renders it a favorite burner for 

 those using gasoline gas, or the mixture of gasoline vapor and 

 air made by gas machines 1.50 



2130 BURNER, Adjustable Bunsen, with attachment for triangles, dishes, etc., 



inside dia. 3 inches 2.25 



2131 BURNER, Tirill's Form, for coal or gasoline gas. This burner is made 



entirely of brass, and is considered by some to be the best 

 burner made . . 1.50 



