. Busyman's Magazine, July-December 1907. rs, and in a softened con-dition applied to a strong, coarse fab-ric, or used for stiffening the heelsof boots. Even without chemical change,many articles once profligately castaway are now being made to serveuseful purposes. Broken and wornstuff from the bench, broken piecesof grindstone, old pipes, etc., are moreand more being regarded as havingonly half performed their services,and in a hundred different forms aremade still to contribute to the satis-faction of human needs. Worn-outfiles may make turning tools, scrapers,and burnishers, while the ste
. Busyman's Magazine, July-December 1907. rs, and in a softened con-dition applied to a strong, coarse fab-ric, or used for stiffening the heelsof boots. Even without chemical change,many articles once profligately castaway are now being made to serveuseful purposes. Broken and wornstuff from the bench, broken piecesof grindstone, old pipes, etc., are moreand more being regarded as havingonly half performed their services,and in a hundred different forms aremade still to contribute to the satis-faction of human needs. Worn-outfiles may make turning tools, scrapers,and burnishers, while the steel byforging down may be utilized in al-most any way. When a grindstone isworn into a small diameter, it can beturned in a lathe into grooves forgrinding paring gouges. A few el-bows, tees, and bends, applied to irongas-piping, which formerly was givenaway, will construct many things—ex-cellent hand-rails to steps, or fencingfor gardens, or supports for shelves ortables. Truly the conservation of matter isof wide practical To Cross Atlantic in Thirty Hours By Wm. G. Fitz-Gerald in Technical Magazine IT is clear our ocean flyers havepretty well reached the maximum speed at which they can be runwith economy. Every knot aftertwenty entails a cost in power out ofall proportion to the increased speed,so tremendous is the resistance only the giant hull could be liftedclear, yet resting on water-planes soas to glide or skim exactly like an air-ship, only in a medium 800 timesheavier—then, indeed, marine archi-tecture would be utterly revolution-ized. For in such case it would no longerbe necessary to increase power eighttimes merely to double the shipsspeed, as is necessary at , therefore, are thelatest experiments, which have provedto demonstration that speeds up to ahundred miles an hour are possibleat sea, giving a clear prospect of athirty-hour run from New York toLiverpool, with the added marvel thatseasickness also will be relegated t
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