— . v.» » ’ -I uti v iuv ipower that could be used to replai c mule power to advantage. This premium lias called into requisition the best inventive genius of the country. Its effect is felt j even in this community, and has given an impetus to tiie subject of increasing the rapidity of transportation on our own canal. That experienced engineer and inventor, (’apt Ldw art] Lynch, whose engines non in use oy the Navy of the I’uitetl j States have attained the greatest speed at 1 the hast cost of any adopted by that Department ot the government, and who has devoted year- in experimenting upon the subject, has brought Ids inventions to such a condition of perfection as to have convinced a number i f capitalists of the perfect feasibility of adapting them to the purpose of canal nivagatiou. ('apt. Lynch arrived in this citv yi-terday to suj)erin-tend the construction of one of these boats, j the keel ot which will at once be laid in j the yard of Mr. Richard Coulehan, practical boatbuililors. The engine is be* ing manufactured in Alexandria. The boiler aud propellers, a- well a? other portion.- ot the machinery will Ik* made at McKuig’- Foundery and Machine Shops in this city. The Captain is perfectly »:uiguiue of having solved the ( dittlcult problem ol successful canal navigation by steam, and is confident of shortly working revolution in that modi of trun--porfatiou. Among the prominent gentlemen interested in tin* boats which Capt. Lynch dtsignB having built are ( apt. Alex. Si»aw an 1 S. M Hamilton, INq., of Rail; unrc, well known a- heavy o|K*ratora in t on!, and Mi Wa sh A Mclvuig. owners j “