DOTS.--The words "speciality" and "specialty" are synonymous, and may both be used; but the former is adopted by our best writers--as, for example, the novelists Bulwer-Lytton, and Dickens, the poet Elizabeth B. Browning, and the theological historian, Hooker. Nevertheless, Shakespeare says "specialty," but that may have been the old word of a former age, and such could not govern modern usages. REGRETFUL need not feel unhappy about a kindly act of sympathy. The letter was doubtless written in suitable terms. Her verses have a good deal of prettiness and sweetness about them; but she needs to study the rules of metrical composition, as a good many errors appear in her lines. We direct her attention to previous answers. A. M. L.--1. We are perpetually telling our girls that it is very unladylike for them to walk out alone with men unless engaged to them, and with the knowledge and consent of their parents. Even if you could not take the trouble of reading out answers to other girls on this subject, why do you not ask the opinion and advice of your mother or aunt, or any lady possessing ordinary common sense and acquaintance with the general rules of propriety. 2. Clean brass with cream of tartar made into a wet paste; brush off when dry, wash in boiling water, and rub with a chamois leather. LITTLE WHITE OSS.--To remove grease from dresses, rub the spots with benzoline and hang them in the air. The word "catechism" is derived from the Greek, and signifies a form of oral instruction in the rudiments of knowledge by way of question and answer. The oral instructions delivered by the early Christian priests to their converts were written down first in the eighth or ninth centuries, the present Church of England Catechism in 1551, and was added to and altered in 1604 by the order of James I. We do not admire your selection of a name. "White Rabbit" or "White Mouse" would have been preferable. TWENTY.--Write to our publisher, Mr. Tarn. The Editor has nothing to do with the publishing department. CECILIA.--Good Friday is a Bank Holiday, also Easter Monday, Whit Monday, first Monday in August, Christmas Day, and the day following, or, if that be a Sunday, then the Monday following. In Scotland the holidays are different, being New Year's Day, Good Friday, first Monday in May, first Monday in August, and Christmas Day. WHITE VIOLET.--September 21st, 1869, was a Friday; June 27th, 1867, was a Thursday. Your other query has been recently answered. PICANINNY.--We are glad to hear you have found the G. O. P. so useful. Use gloves. IRA.--We are much obliged, and regret we cannot make use of them. LITTLE WOMAN.--We think you had better let matters take their natural course. Such a long and intimate acquaintance would be the best commencement for married life, which is too often hastily entered into, and thus ends in disappointment from lack of knowledge of each other's characters and habits.