May 24th--The whole regiment (except one Company under Capt. Rannie, which were detained at Marblehead) had arrived, and were immediately formed, consisting of about 600 of as noble fellows as ever trod the tented field; all in good health and fine spirits, and their discipline unrivaled;--nothing worthy of note took place while we remained here, which was but a few days, except the degrading situation in which Capt. Whitney of the Riflemen, had placed himself, while Commanding Officer, by descending to the level of a Musician, and with his own hands bestowing corporeal punishment upon the bare posteriors of two privates of his Company, in the face of the whole regiment on parade. Such conduct in a commander, merited and received the pointed scorn of every officer of the regiment.--The two men, who had heretofore been good soldiers, deserted within two hours after receiving their punishment--and a few days afterwards Capt. Whitney resigned a command he was totally unworthy of, and returned home.--Lieut. A. Hawkins, a fine officer, was afterwards appointed to the command of this Company.--We received our tents, camp, equipage, &c. and Col. Boyd and Lieut. Col. Miller, having arrived to take the command.--On the 3d. June--1811, we commenced our march for Pittsburgh;--Crowds of spectators from the city of Philadelphia came to witness our departure;--the day was extremely warm, and we were almost suffocated with heat and dust.--We marched five miles from the city, and encamped about 4 o'clock,--Many respectable citizens from Philadelphia accompanied us to our encampment. I omit the particulars of our march through the State of Pennsylvania, as no event transpired, except what falls to the lot of all soldiers on long marches.--The country being extremely rough and mountainous, our shoulders pressed beneath the weight of our cumbrous knapsacks, our feet swollen and blistered, and performing toilsome marches beneath a burning sun, amid clouds of dust, in the warmest season of the year, rendered our situation painful in the extreme, and at times almost insupportable.--A number of desertions took place on this march, in consequence of its having been whispered among the troops, that they were to be sent to New-Orleans,--and it is believed, had not Col. Miller given them to understand that no such thing was intended, one third at least, of the regiment would never have reached Pittsburgh;--however, placing unbounded confidence in the word and honor of Col. Miller, order was restored, and the fears of the men were calmed. On the 10th June, we arrived at Carlisle, a handsome little town about 120 miles from Philadelphia, where we halted one day, to refresh and rest our wearied limbs.