These notices, which have not hitherto appeared in an English form, of a highly interesting historical remain, not previously identified by the antiquarian topographer, will, it is hoped, impart a new interest to the Baily of Howth; but, independently of such claims on our attention, its singular picturesqueness should have made it long since not only more familiarly known to the visitors of our capital, but also to ourselves. P. JOHNNY HALFACRE; OR, THE VALUE OF TIME. BY MARTIN DOYLE. Statesmen and professional men, whether occupying stations of eminence, or struggling to attain them, duly estimate the importance of time; they know the value of an hour too well to mis-spend it. The lawyer of high practice, during the term season, steadily pursuing his laborious studies, and determined to overcome every difficulty in his pursuit of professional rank and wealth, rises early, and borrows from the night so many of those hours which are spent in rest and sleep by men of less mental activity, that he leaves himself but a very contracted measure of time for those essential purposes. As to dining out with friends at this period of care and labour, he rarely ventures to indulge in such a recreation; or if he does on some very particular occasion, such is the discipline of his mind, such the strength of his self-denying habits, that he can rise from the table at a prescribed moment, and with a cool lawyer-like head apply to his nocturnal labours as if there had been no interruption of an exciting nature. The physician--I do not mean him who is regularly called out of church, or from the social party, by his servant, under the pretence of a pressing call, but the real and laborious practitioner, to whom minutes are money and fame--will not idle away an hour; neither will the sober steady shopkeeper, until he has realized an independence, absent himself from his counter as long as there is a reasonable chance of a customer dropping in; nor the operative mechanic, who has to finish his piece of work within a prescribed time, and who will contrive to do it even in despite of all the petty interruptions to which he is liable. Time is proportionably valuable to the meanest peasant who possesses a cabbage garden, and if properly estimated and applied, will add to his comforts in a degree of which, he who is habitually uncalculating and unthrifty in this respect can have but little notion.