upported a great variety of chemical and physical apparatus. A polariscope, a Fig. 4 shows an improved form of oil burner. This is constructed on the studenit’s lamp principle, and is microscope, and a spectroscope may be applied to this lantern. The self-focusing arc lainp has been adapted… … to various purposes, aside from lantern use, including adjustment. This lamp gives unusually strong light, of lantern called the Criterion. In this cut the various theater stage lighting, photo-engraving, etc. entirely free from smoke and disagreeable odors. parts are disconnected in order to show…
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