Electric Discovery

1847 Scientific American  
Although sulphu r is found to exist more or less in the vicinity of every volcano, the on ly instance of sulphuric acid being found ill a state of nature, is in the island of Java, near Batavia, the capital. A lake of sulphuric acid occupies the crater of an extinct volcano, from which reservoir it flows in a rivulet down Value of Knowledge. the sides of the mountain to a considerable A new article has of late been discovered in distance. During the dry season of the year, Maine, calle!! the"
more » ... ine, calle!! the" American Metallic LUiltre,' this remarkable stream becomes absorbed by which seems to be unequalled for cleaning the thirsty arenaceous SOil through which It and polishing metals. Its discovery was in runs ; but in the rainy season it forms a con this wise: A you ng man from Boston, who had flue nee with another stream, called the White paid considerable attention to geology and River. The water of the latter though satu chemistry, was travelling for the purpose of rated with a whitish clay, is not pernicious, obtaining subscribels to a newspaper, when far less fatal, either to fish or other animals. passing through the town of Newfield, he no-But the moment it is j oiried by the acid rivu ticed some bricks of very peculiar color. He 'let, the stream becomes transparent from the traced up the bricks to their clay bed, and puracid precipitating the earthy matter which it chased the farm on which it was situated, for holds in solution ; and it destroys not only the which he paid fifteen hundred dollars, went to fish, but also the whole of the vegetation over Messrs. Hoe & Co., are making two huge Printing Presses for the New York Sun. The types are placed upon a cylinder 4 feet in di ameter, and the inking apparatus is of a novel description. All the motion is rotary, and it is calculated that in the saving of friction, and wear and tear by such means,the great amount of from five to t wenty thousand dollars expense per annum will be avoided. It is calculated that these presses will be able to throw off 30,-000 copies per hour. Their cost will be twen ty thousand dollars. The circulation of the Sun is more thau 50,000, and heretofore they have been unable to sup ply copies as early as required, but with their improved presses, the first in the city, they will effect a complete re volution in newspaper printing.
doi:10.1038/scientificamerican06051847-290y fatcat:jlaso7jjtbcuhfvyy4o4lavq7i