Gathering the Ravelled Threads of a Long Story--What befel Several Persons heretofore named--Marriages in Demand, and only a few furnished--A Raid into Canada--What befell Colonel Egbert Crawford and the Two Hundredth Regiment--A Cavalry Charge at Antietam, and a Farewell 460 SHOULDER-STRAPS. CHAPTER I. TWO FRIENDS--A RENCONTRE BEFORE NIBLO'S--THREE MEETINGS WITH A MAN OF MARK--MOUNT VERNON AND THE INAUGURATION--FRIEND OR FOE TO THE UNION? Just before the close of the performances at Niblo's Garden, where the Jarrett combination was then playing, one evening in the latter part of June, 1862, two young men came out from the doorway of the theatre and took their course up Broadway toward the Houston Street corner. Any observer who might have caught a clear view of the faces of the two as they passed under one of the large lamps at the door, would have noted each as being worth a second glance, but would at the same time have observed that two persons more dissimilar in appearance and in indication of character, could scarcely have been selected out of all the varied thousands resident in the great city. The one walking on the inside as they passed on, with the right hand of his companion laid on his left arm in that confidential manner so common with intimate friends who wish to walk together in the evening without being jostled apart by hurried chance passengers, was somewhat tall in figure, dark-haired, dark side-whiskered, and sober-faced, though decidedly fine-looking; and in spite of the heat of the weather he preserved the appearance of winter dress clothing by a full suit of dark gray summer stuff that might well have been mistaken for broadcloth. Not even in hat or boots did he make any apparent concession to the season, for his glossy round hat would have been quite as much in place in January as in June, and his well-fitting and glossy patent-leather boots would have been thought oppressively warm by a hotter-blooded and more plethoric man. Those who should have seen the baptismal register recording his birth some five-and-thirty years before, would have known his name to be Walter Lane Harding; and those who met him in business or society would have become quite as well aware that he was a prosperous merchant, doing business in one of the leading mercantile streets running out of Broadway, not far from the City Hospital. So far as the somewhat precise mercantile appearance of Harding was concerned, a true disciple of Lavater would have judged correctly of him, for there were few men in the city of New York who displayed more steadiness, or greater money-making capacity in all the details of business; and yet even the close observer would have been likely to derive a false impression from this very preciseness, as to the social qualities of the man. There were quite as few better or heartier laughers than Harding,