. The Decorator's assistant. apeculiar disposition of extreme ornament, theircomparative massiveness is materially mentioning this, nevertheless, we by nomeans advise imitation, for there are manycircumstances which might preclude the sameresult from following, in all cases, and, there-fore, where there are any prescribed rules,founded upon the observations of practicalmen, should be closely followed, as, far fromimpeding an original idea, they rather assist itby steering it clear of the quagmire of error, (To be continued.) Wonders of the Magnetic Telegraph.—By means of the magnet
. The Decorator's assistant. apeculiar disposition of extreme ornament, theircomparative massiveness is materially mentioning this, nevertheless, we by nomeans advise imitation, for there are manycircumstances which might preclude the sameresult from following, in all cases, and, there-fore, where there are any prescribed rules,founded upon the observations of practicalmen, should be closely followed, as, far fromimpeding an original idea, they rather assist itby steering it clear of the quagmire of error, (To be continued.) Wonders of the Magnetic Telegraph.—By means of the magnetic telegraph, a clockin New York can be com-pared with another ata distance of two hundred miles quite as accu-rately as two clocks can be compared in adjoin-ing rooms. The time i-equired for the electricfluid to travel from New York to Washingtonand back again, a distance of 450 miles, is sosmall a fraction of a second, that it is inappre-lciable to the most practised observer.—New\York Paper. THE decorators 181 IHensiiratiort of Supetticeg, {Continued from page 174.) PROBLEM XI. To find the length of an arc A b, the circumference a d b a or the diameter d b beinggiven. A ^^ ^ B
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