We have heard nice calculations as to the precise number of calls, that an able-bodied, well-trained New-Year's visiter can accomplish between midnight and midnight; allowing, of course, a couple of hours for the toilette, and a moment to snatch a mouthful at breakfast and dinner: it is affirmed, however, that as great generals have passed days of battle without food, so your chivalrous Knickerbocker should be willing to forego, on such an occasion, even a sight of the roast turkey and cranberries. Allowing the individual, however, something to sustain nature, that he may be the better enabled to perform his duties, it is supposed that a beau, in good visiting condition, should pay his court in not more than three hundred, nor less than fifty drawing-rooms. But, then, to do this, a man must have method; he must draw up his plan of action before-hand; he must portion out his districts, as they lie on each side of that longest of streets, Broadway; he must not only study the map of the city closely, but he must possess an accurate knowledge of the localities; he must remember that some houses have stoops of twelve steps, that some drawing-rooms are not on the first floor. He must NOT allow himself to be enticed into any flirtation whatever, beyond a glance or a smile; he must NOT indulge the hope of calling twice upon the sweet creature he most admires; he must NOT be tempted to sink, even for a moment, upon the most comfortable of ottomans or divans; he must NOT return home to re-adjust his locks, to change either boots, gloves, or handkerchief. We have heard it asserted, that owing to some unfortunate weakness of this kind, many a promising youth, unaccustomed, probably, to the hardships of such visiting, has been distanced in the gallant race of the day, by more methodical men--by men who were actually encumbered with over-shoes and greatcoats! It is amusing to watch the hurried steps of some experienced visiter without doors; the decision of his movements, the correctness of his calculation in passing out of one house into another; and one is sure to know a raw recruit, by his anxious, perplexed manner and expression.