As a striking evidence of the accuracy of his researches, we will mention that in tracing the route he was much surprised and puzzled by what seemed the strange divergence of the army from the Youghiogany river after passing it at Stewart's Crossings. Yet the traditionary evidence and marks on the ground seemed to establish beyond doubt the fact that the army had passed far into the interior of our present county of Westmoreland, and near to Mount Pleasant, crossing the line of the Pittsburgh and Greensburg Turnpike road. This seemed so far from the natural and direct route that even the strong traditionary and other evidence, could not entirely remove the possibility of doubt. Mr. Atkinson himself was entirely satisfied as to the correctness of his own conclusions, but of course would be gratified to receive a confirmation, in an authentic shape, of his own convictions. Just at that crisis we received the letter from Mr. Sparks, which precedes these remarks, thus settling most conclusively the verity of many of the traditions current in the country as to the erratic course of Braddock's army from Stewart's Crossings to the Monongahela river. We are, deeply indeed, indebted to Mr. Atkinson, and also to his assistant, Mr. Middleton, for their very valuable contribution in illustration of the early history of this country. The Pittsburgh and Connelsville Rail Road project cannot be regarded as an entirely fruitless effort; it has, at least, produced this most valuable historical essay. All additional information in relation to those early scenes must possess interest to every intelligent American; and we rejoice in the opportunity of placing Mr. Atkinson's valuable communication and the accompanying map before the readers of the _Olden Time_: "The interest with which the routes of celebrated expeditions are regarded, and the confusion which attends them after the lapse of years, is well exemplified in the case of Hannibal, whose march toward Rome, in order to divert their army from the siege of Capua, was totally lost in the course of a few centuries. The constant blunders of Livy in copying first from one writer, and then from another who made him take a different path, justify a recent English historian who went to Italy to see the ground for himself, in saying that the Punic War was almost as hard in the writing as the fighting.