THE AMERICAN.CITY ITEMS. 1The train from Chicago to Mil- I ▼aukie, vu throwu off the track on i Friday night last, by running over acow. and the baggage Master and Ex preas Messenger badly, and several othera slightly injured.X3T The train from Chicago to Mat-icon on the Central road, ran over an ox, and the whole train was thrown 1 from the tralt; k on Thursday last No one i jured.;Lighthouse on Minot’s Ledge.—A jstructure of granite and iron is to be jLiccdon tliis dungerouslioal, which, it is supposed, will be completed iu j about five year*.IlINAUGURATION OF THE ClAT MoNV-ment.—On Wednesday last, July 4th, t ie citizens nf Pottsville, inaugurated ihe Clay Monument, erected as a Inst- j ing tribute to the memory of HenryClav. ]