_Letter IV_ is dated from Hallidaysburg. Leaving Duncan's Island at 6, the traveller embarked in the canal packet Delaware, Captain Williams, following the bank of Duncan's Island in a north-western course for about a mile, and then crossing the Juniata over “a substantial aqueduct built of timber and roofed in.” In the course of the day he passed Millerstown, Mexico and Mifflin, arriving at Lewistown before sunset, a distance of about forty miles. Lewistown contains about sixteen hundred inhabitants, some of whom, says Mr. Prolix, make excellent beer. Waynesburg and Hamiltonville were past during the night, and Huntingdon at 7 in the morning. In the course of the day Petersburg, Alexandria and Williamsburg made their appearance, and at 3 P. M. a shower of rain. At half past 6, “the packet glided into the basin at Hallidaysburg.” Here terminates that portion of the Pennsylvania canal which lies east of the Alleghany mountains. Goods destined for the west are taken from the boats and placed in burthen cars, to make their passage over the mountains by means of the Alleghany portage rail road. Mr. Prolix here put up at Moore's hotel, which was not only very “neat, elegant,” &c. but contained at least one vacant room, six feet wide by fourteen long, with a double bed, two chairs, and a wash-stand, “whose cleanliness was as great as its littleness.” _Letter V_ is headed _Bedford Springs, August 7, 1835_. At half past 8 on the 6th, “after a good and abundant breakfast,” Mr. P. left Hallidaysburg in a coach and four for these Springs. The distance is thirty-four miles—direction nearly south. In six hours he arrived at Buckstown, a little village consisting of two taverns, a blacksmith's shop, and two or three dwellings. Here our traveller put up at a tavern whose sign displayed the name of P. Amich—probably, quoth Mr. P., a corruption of Peregrini Amicus. Leaving this establishment at 3 P. M. he proceeded eleven miles to the village of Bedford—thence two miles farther to the Springs, of which we have a very pretty description. “The benches,” says Mr. Prolix, “and wooden columns of the pavilion have suffered much from the ruthless ambition of that numerous class of aspirants after immortality who endeavor to cut their way to the temple of fame with their penknives, and inflict the ambitious initials of their illustrious names on every piece of stuff they meet. As a goose delights in its gosling, so does one of these wits in his whittling.” _Letters VI and VII_ are a continuation of the description of the Springs. From letter VII we extract, for the benefit of our invalid readers, an analysis by Doctor William Church of Pittsburgh, of a quart of the water from the particular springs ycleped Anderson's.