object glass and second mirror are E level of the lantern. carried by another ring of thesame retort stand. The pre- In the Chemical News for February 25, 1870, there is de. sent writer has further simplified this construction by using scribed, by Edwin Smith, M. A., an arrangement for show- *@… … thenra bundle of paral- is, apparently, as good as new. It requires very little oil.” tribution of light at the outer surface of the last lens; lel rays falls on the REMARKS BY THE Ep1ToR.—If a loose pulley is properly arranged, it will run as well as ashaft bearing. It must be d other words, are…
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