the older form of apparatus. of chemical and physical apparatus. A polariscope, a Fig. 4 shows an improved form of oil burner. This The apparatus here illustrated is manufactured by J. B. Colt & Company, 115 Nassau Street, New York. is constructed on the student's lamp principle, and is microscope,… … Fig. 3.-AUTOMATIC ARC LAMP. Fig. 4-OIL BURNER. Fi~. S.-OXYHYDROGEN BURNER. Fig. 8. INCANDE8CENT ELECTRIC LAMP Fig. 7.-WEL8BACH GAS BURNER APPLIED Fig. 6.-HAND FEED ELECTRIC APPLIED TO LANTERN. TO LANTERN. LAMP. to various purposes, aside from lantern use, including adjustment. This lamp gives…
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