Scientific American Supplement, No. 520, December 19, 1885

Little search has been made for the remains of this aqueduct, and its exact course is not known; but during my examination of the remains of the subsequent aqueducts at a place...

Meucci, however, kept at his experiments with the object of improving his telephone, and several changes of form were the result. Fig. 8 shows one of these instruments construct...

1. That radiation is a tangible and measurable cause, sufficient to account for all losses heretofore ascribed to an intangible, immeasurable, and wholly imaginary cause, viz.,...

In the chapter entitled "Das insektenleben in arktischen ländern," which Dr. Christopher Aurivillius contributes to the account of A.E. Nordenskiöld's Arctic investigations, pub...

I spent a few days very pleasantly last autumn driving with some friends to the two principal fields, the Murraysville and the Washington county. In the former district the gas...

Natural Gas Fuel and its Application to Manufacturing: Purposes.--Paper read before the Iron and Steel Institute by Mr. ANDREW CARNEGIE.--First use of the gas.--Wells near Pitts...

Dec., 1874. Dec., 1884. Per lb. Per lb. £ s d. £ s. d. Osmium 71 10 0 62 0 0 Iridium 70 0 0 45 0 0 Gold 62 15 0 63 0 0 Platinum 25 7 6 21 7 6 Thallium 23 17 6 4 15 0 Magnesium 1...

All doors contained in "fire walls" should have springs or weights attached to them, so as to be at all times closed. Fire doors can be shut automatically by a weight, which is...

Using the gold salt in this way, the principal difficulty experienced in holding gold wire unflinchingly in the exact position vanishes, while only a comparatively low temperatu...

The elastic limit of curved wire has never been determined, since any stress that will cause it to reach a straight line is beyond the elastic limit of the inside of its section...