CENTBAL SCIENTIFIC CO., CHICAGO, U. 8. A. 



115 



2038. 

 2040. 

 2041. 



2044. 

 2045. 



2048. 

 2049. 

 2052. 



2054. 

 2056. 

 2058. 

 2062. 

 2064. 



No. 2054. 



No. 2058. 



No. 2064. 



BURNER, Koch Safety, large size, with weight release instead of spring, insuring more per- 

 fect operation. With mica chimney to protect flame from draft. On stand adjustable hori- 

 zontally as well as vertically $15.00 



BURNER, Koch Safety, same as No. 2038, but with two burners mounted on same stand. Each 

 burner is provided with mica chimney, and can be adjusted horizontally. Vertical adjust- 

 ment common to both 21.00 



MICA CHIMNEY, with clamp to attach to Koch Safety and other burners 1.70 



BURNERS, Meker, a very powerful burner designed on scientific principles which eliminates 

 entirely the cold Bunsen cone and gives a flame that is practically a homogeneous mass of 

 burning gas with a temperature that is nearly uniform throughout. No. is the students' 

 form; Xos. 1 and 2 are to be used instead of the Bunsen Burner; No. 3, the general labora- 

 tory type; Nos. 4 and 5, to replace the blast lamp. 



No 1 2 3 4 5 



Height of burner, mm 115 115 130 155 190 250 



Diameter of flame, mm 16 16 20 25 30 43 



For artificial gas 1.70 1.80 2.00 2.60 3.10 6.50 



Tor natural or gasoline gas 1.80 2.00 2.60 3.10 6.50 



BURNERS, Meker, Multiple Tube, with four No. 3 burners mounted on a common tube. Very 

 useful in heating combustion or muffle furnaces. 



For artificial gas 16.00 



For natural or gasoline gas 19.25 



BURNER, Multiple Tube, same as No. 1992, with two tubes on same base. Height, 6 inches; 



diameter of tubes, % 6 inch 2.30 



BURNER, Multiple Tube, three tubes iri circle 1 . Height 6 inches, diameter of tubes % 6 inch 2.85 

 BURNER, Multiple Tube, four tubes in circle. Height 6 inches, diameter of tubes % 6 inch 3.00 

 BURNER, Multiple Tube, six tubes in circle. Height 6 inches, diameter of tubes ^ 6 inch. 4.00 

 BURNER, Multiple Tube, four tubes in row. Height 6 inches, diameter of tubes % 6 inch. 2.90 

 BURNER, Multiple Tube, four tubes in row, each with stop-cock. Height 7% inches, diameter of 

 tubes % 8 inch 6.90 



