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V/r have received frnm Mr. Leavenworth, engra- 

 vinifs aivl adiscrintion of his Wire Telegraph Fence. 

 Wn copy the following full description from the New 

 York FarniiT ani Moclianic : — 



'■This fence is iho invention of Mr. Lucius Lea- 

 VBNvvoiiTH, of Trnmansbnrfr, Tompkins Co., N. Y., 

 for which Lottors Pattent were issued last October. 

 The wire can he formed so as to pnt the pickets np 

 in seitions of any required length. It is drawn suffi- 

 ciently iij,'ht at each corner ol the field to strengthen 

 the i't'uce and fasf/*n the pickets so that a hrace is 

 necessary at the first and last posts. The remainder 

 of the posts, if wood, can he set in sills ; if iron, in 

 fiat stone. The hooks H, II, pass through the posts 

 to allow the wires to be drawn. The screw on the 

 opposite side I'f the posts will draw the end of the 

 hook to the post which secures the wire. The wires 

 are first secured on the post C, by screws or bolts, so 

 that all ihe parts ore of simple construction. The 

 wires are formed, by a machine invented by Mr. 

 Lkavk.vworth, so as to encircle and retain the 

 picket in a most simple manner. The machine forms 

 the wire to any sized picket, and for any required 

 space. The picket is turned with cylinder or travers- 

 ing lathes. 



Fences made on this plan, attached to cast iron 

 posts with wrought iron tennons and stone scats, 

 would last for a number of years if well painted. 

 The pickets can be made of the cheapest kind of 

 timlfor ; and when it is painted will be durable. If 

 preferred, a cheap kind of varnish could he used 

 instead of paint. The pickets and wire might be 

 paintetl or varnished before they are put up. On 

 bottom lands, wliere a movable fence is required, it 

 will supercede all others. It can be taken down, 

 removed, and put tip with very little trouble, weigh- 

 ing only about thirty-five [munds to the rod. 



There are diUbrent jdans for putting up this fence. 

 The one in the engraving is probably the most sub- 

 stantial. The ground can be raised and a tier of 

 stone laid instead of a hoard or the fence can be 

 suspended from post to post without either. 



This fence offers but little opposition to the wind, 

 and consequently no snow wreaths are heaped around 

 it. It is calculated to be a safe-guard against all 

 animals commonly fenced against. The transporta- 

 tion of this fence will be trifling com]>ared with other 

 fences. It is well adapted for farmers on the western 

 prairies, ami in all coiuitries where timber is scarce. 

 With suitable niiichinery, where timber is plentiful, 

 it is calculated that pickets can be manufactured for 



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from thirty to thirty-five cents per rod ; the wire 

 formed for putting' it up will cost from twenty to 

 twenty-five cents. 



To make use of this fence for telegraph purposes, 

 it will he necessary to suspend it from post to post, 

 and insidate the wire at the posts. A farmer having 

 his land inclosed with this plan of fence, with certain 

 fixtures attached to it, can tell whether his fence is 

 dow?i or any part of it is brokt-n without leaving his 

 dwelling. 



Figure 1 is a front, and fig. 2 a sectional view of 

 the improved wire fence. A is the ground : B the 

 = bottom cr base 



board : ( ', D, E, 



are the posts ; 

 ^ K, K, K, are the 



pickets ; L, fig-. 



'2, is the wire ; 

 IT, H, are the binding hooks, one of wh-ich is repre- 

 rented in fig. 2. The bottom board is bevelled at 

 the top, and the bottom of each picket has an angu- 

 lar notch cut in it to fit on the upper edge of the 

 board, which gives firmness to the fence, while the 

 board presents a bevelled edge to the weather. 



Any communications, post-paid, in regard to this 

 fence, or for the purchase of Rights of States, Coun- 

 ties, kc, may be addressed to the patentee at his 

 residence, or to Mr. John Savagr, No. 9 Coenties 

 Slip ; also, the editors of the Farmer and Mechanic, 

 who are authorized agents for the same." 



Messrs. EnrTons : — While reading an article in a 

 late number of the Farmer, from the pen of Prof. 

 Dkwey, of Rochester, N. Y., the following inquiry 

 arose in my mind : Suppose, as is generally believed, 

 that the earth is an oblate spheroid, i. c. flattened at 

 the poles, and at rest in space, i. e. having no rota- 

 tion or revolution on its axis, and consequently no 

 centrifugal force, where would its attraction, i e. the 

 force of gravity, be greatest — at the equator ? or at 

 the poles ! An answer (amounting to a itiathemat- 

 ical demonstration, if possible,) is desired, if such a 

 subject is adniissable into the colnmns of the Farnier. 

 II. — Doun East, Jiin'y. 1850. 



Frankt.in found time in the midst of all his labors 

 to dive into the hidden recesses of philosophy, and 

 to explore the untrodden path of science. Want 

 of time, therefore, is but a poor excuse for ignor- 

 ance of one's profession. 



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