The Telegraph

Well, the Telfgrapli is rcally going to be cons'.ructcd thisseason, from Detroit to Milwaukee, - to pass througli on the line of the Central RailroaH. Contracis are now making for the furni!iingof the posts, and ihewire isalready contracted fcr. It is to ho complcted by the !kl September, at lenst so the contraéis run, but we think it may be n month or two later. Ourfriend Mr. B. Wood of HömBrj ia agent for the leltingof the contracts for getting ilie posts. The posís are lo be 25 feet long and 4 or 5 inches in diameter at the top. The wires are fastened to these in ibis wise. A bolo is board in the top of the post four inches deep and a round hardwood pin, eight inches long is driven into it, sothat 4 inches of it projects above the post, on this is placed a glass which fits on tightly, over the glass cap is then puta cast i roa cnp, having a piojfetion like a jug-handlo. Through this the wire passes, and is wedged in with glass vvedges so as not to come into obtact with the cast iron cnp. The subject of this arrangement is to prevent the escape ofthe electricity from the wire. - The glass is a non-conductor - if the wire otlly touches the glass wedge, none of the fluid wil] pass off through the feap; but sometimos the wedges get looso and the wirocome in contact with the iron; w'hich being a good conductor irhmediately receives a charge of electricity; but being iiiPulnted by the g!as3 cap underneath it, it does tiot draw offmuch from the wire. It is regardedas certain that the stock on this line wil] pay a large per cent.- The line between BufTalo and New York, we understond from Mr. Wood, pays 200 per cent. Tliis srems to us rather