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Ancient Milanese Aqueducts.
[Jour. Frank.Inst.~ American Bridge-building.--In an address upon the public works of the United States, M. Malezieux compliments the American engineers upon their skill in building bridges of large span, and says that all other nations may borrow many useful hints from them in regard to the use of compressed air in laying foundations.--Ann, des Po~t.~ et Cha~.~.
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Interesting Experiment.--On the 4th of August, Pasteur en-('losed some vine-sets in hot-beds, almost hermetically sealed. The grapes ripened about Oct. 10th. Grapes that had ripened in the open air fermented in less than 48 hours, in a temperature varying between 25 Β° and 30 Β° (77 Β° to 86Β°F.), but those that ripened under glass remained unchanged. This result, which had been predicted by Pasteur, lends strong confirmation to his views.--Cbmpte.~ Renders.
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Beds.--The Japanese government has offered a liberal subvention for the development of the coal basin in the island ,f Yesso, where the supply is said to be sufficient to furnish, for a thousand years, as much as is now mined in Great Britain. The apprehension, which is already felt from the competition of the Mongolian races, will be still more reasonable when they have felt the full use of the principal element of European industrial wealth.--Les Mondes, C.
Delicate Measurements of Contacts.--C. M. Goulier states that if the eve is so placed as to see the ivory point of a Fortin barometer in the same direction as the image of the cap which the mercury reflects, while the rest of the suri~aee reflects the sky, the naked eye c~m readily distinguish the slightest indentation of the point into the mercurv. By experiment~ with a vertical micrometric vise, he found that he could estimate the contacts within less than ~0 of a millimeter ('00013 iu.).--('ompte.~ Re~d~l.~.
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Ancient Milanese Aqueducts.--In making excavations for a new system of sewerage, E. Bignami Sormani has found wellpreserved remains of" two ancient aqueducts, which were evident]), u~d for conveying fresh water, probably for the supply of fountains and other domestic nses in early palaces or villas. The pipes are of terra-cotta, and Sormani is inclined to refer them to the time of the Roman Empire, the ibrm, lnodc of construction and general details being indicative of a great antiquiff.--I/Politecldco.
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π SIMILAR VOLUMES
Il cane giusto (un bassotto con Β«amiciΒ» selezionatissimi). Le vacanze giuste (una scelta di campo: Santa o Forte?). La scuola giusta per il figlio (in lingua straniera, of course). La festa di Natale giusta (verso metΓ ottobre, per battere l'affollamento di inviti festivi). E gli abbinamenti cromati
Many of us take the water that comes out of our faucets for granted. But have you ever wondered how water makes it to your house in the first place? Sometimes it travels for hundreds of miles, thanks to aqueducts! This volume takes readers on a journey to the ancient world to see how people created