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The Magnetic Telegraph

The Magnetic Telegraph image
Parent Issue
Day
10
Month
June
Year
1844
Copyright
Public Domain
OCR Text

me invention b}' which communica tionsare made, without reference tospace. by tneans of Mngnetism, is deserving o! a place among the wonders of the tvorld. It is estimated that the electríc fluid travels at the rate of 180.000 miles in a second. The teiegraphic communication between Balrimore and Washington, a distance of forty miles, or more, is now completed. The nominations of the DemocratSc and Tyler Conventions vvere announced in Washington before theywere generally know ín Baltimore. Information was sent back of the proceedings of Congress, the persons speaking, amendments proposed, &c. The manner of making these Communications is thus detailed in the Free Press;"The wire, (perfectly secured agains the weather by a covering of rope-yan and tar,) is conducted on the top of post aboui 20 feet high, and about 200 yard apart. The pen used is a kind of a threi pronged fork which electricity causes t make an impression. The manner o; writing is this: The chirographer take bold of the loose end of the rnngnetic wire, He dips this end in a little depbsit of mer3ury or quicksilver, which coirmumicatet he electric spark, and this spark passet xlong the wire with the speed of thought. jossessing a su fficient forcé to press the teel points do.vn upon a strip of paper nade tb pass beneath them. ]f is evident hat a mere pressure of the points upon he paper would produce only dots. But vhen it is wished to make a communicaion, a slip of paper is made to pass along 'rom a roller, under these points. The etters, the words, or the ph rases desired o be expressed, are indicated by the ingth of the marks, or by the frequency r paucity of the dots made."05a3 Our reaciere have often read of MeAdamized Roads: but many of the youngei portion of ihem may not have any distinn idea of the mode of constructirg them. Wc find the followingf account in the Boston Chronicle: First excávate thp road bed to the depth 3f two feet or more; then grade and smooth :he bed to tha proper simpe for the then ay curbstone a each si. .'e of the track to ustain the pressure outwards, of the arch f stone thot is to be huilt; then fill in with rokmi stone, (not round or emoolh pebblee nu ro.iph, fn-oken fragmenii--,) say four fó Mght inches in diameter-these to be consolidated and ootiformed to the shape of the road y the hammer and roJJer; then another bed 'F broken stone not exceedin? three inches in I Iiameter, consoidaied in Jike mar and ver th.s the finishing coat of metal, as h is alled, of slones broken to the size of an ege r under. This last cout will become perfectirpolid and smootb, and will last unlil the tone i? „ctually vvorn oiT b ij,e wheels. J hpre is one circumstance (vhicli is ot ntnded to among us, and which will account r the ili success of aJ! our atlernpts at mang road tracks of elone. JYüt a narltcle of irth or ofjriable tone shovld be altowèd ?on the track. This is absoJutely essentiaJ ihe eystein."ttSuggestions have been made in reisrence to holding a Liberty Mass Meefng at Ann Arbor, orsomeother central )laco on the Railroad, on the Fourth of íuly. A correspondence has taken place n this subject, and inasmuch as in most laces Temperance and Sabbath School elebrations have already been pre-conerted, it has been deemed advisable to ostpone a meeting till about the first of íeptember, to be held at such time and lace as the Central Committee shall desjnate.

Article

Subjects
Signal of Liberty
Old News