MICRO-BURNERS 



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deposits, etc., examined with low powers as well as if the material 

 were transferred to a glass object slide. 



Gas Lamps for Microchemical Work. The form of " micro- 

 chemical burner " commonly referred to in the older manuals 

 on the microscope and microscopic methods is shown in Fig. 

 86. This burner answers admirably for all purposes involving 



FIG. 86. Burner for Microchemical 

 Analysis. 



FIG. 87. Burner for Microchemical 

 Analysis. (Xi.) 



only moderate heating of very small amounts of material. Since, 

 however, microchemical methods often require a preliminary 

 handling of several grams or cubic centimeters of substance, 

 the burner shown in Fig. 87 will be found to afford a wider range 

 of usefulness. It also occupies less space upon the work table. 

 It consists of an ordinary Bunsen burner provided with a side 

 tube for a " reserve " or " pilot " flame. In the form illustrated, 



