university. At a recentdiscourse on chemistry, Prof.Heinrich Hoffman, of Berlin,illustrated the atomic consti-tution of organic compoundsby the use of the ballet. Eachgirl was dressed in an indivi-dual solid color and represent-ed an atom, and the groupingand movements of the atomsis said to have… … BURNER FOR SENSITIVEFLAME. / SENSITIVE FLAMES. ET GEO. M. HOPKINS The sensitive flame observed by Dr. Le Conte andafterward developed by Tyndall exhibits some of thecurious effects of sound. For its production it is ne-cessary that the gas beunder a pressure equalto that of a column ofwater six or…
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