the Lake Front at Chicago to the World's Fair grounds Practically every maker of arc lighting apparatus in the dissolved through the operation of dissociation s hour. man manufacturers also make an extensive and quite stances which ordinarily evince a powerful affinity for elaborate display of their lighting systems for ordinary each other become entirely inactive. From theoretical which he had constructed to protect delicate laboratory use of arc lamps of great power in the form of search ditions and his experiments show this to be the case. instruments from the magnetic action of a large dyna- lights is also fully shown and they are used every eve- For example slightly diluted sulphuric acid solidify mo which was within 60 feet of the test room. The ning that the Exposition grounds are open to the pub- ing at —56° was intimately mixed at —125° with finely were inclosed in a double brick wall the space between Electric power its transmission and utilization are pressed but there was no sign of chemical action. On al the two walls being filled with scrap iron. The iron demonstrated on a far greater scale than has ever be- lowing the temperature to rise to —80° action suddenly wall is about 8 inches thick. Delicate tests showed fore been attempted. Five thousand or more horse commenced and became so violent that the contain-, scientific american, 1893-05-13
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