g its leaves, Sir Robert gave an account of Lecture Experiments with Gun Cotton. some experiments made upon some of his students and him- Dr. A. Vogel describes several methods of proving that overcome the difficulty. A, Fig. 1, represents an ordinary self, in which he had found that it was both a… … plate. The water at the bottom of the engagement of ascrew-thread- NANNAANANNY ed plug, J, that can be readily re- the glass has a strongly acid reac- tion and exhibits this reaction if moved whenever it is desired to placed on a watch glass in con- drain the pump, so as to prevent tact with…
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