he density of the current will de- proportional to the distance moved through by the pictures is an exceedingly ingenious one. It was in- end of the telescope, as the angle described by the termine the metal deposited. The amalgam to be ob- vented with the idea of making it possible to draw in… … Obtaining Metal Powders by an Electrolytical method. DRAWING FROM NATURE WITH THE PERSPECTARTIGRAPH. wishes to draw accurately in perspective landscapes, Prof. A. Zamboni (Elettricita, No. 4, 1903) has buildings, or objects of any sort. succeeded in obtaining aluminium, sodium, potassium, purified,…
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