J. H. R.—1. Powdered boracic acid is very useful for those who suffer from excessive perspiration. Another powder consisting of one part of salicylic acid to ninety-nine parts of powdered silica, is also frequently used for the same purpose.—2. Liquid ammonia is a very good preparation with which to soften hard water. Ordinary household ammonia is quite equal to the various patent preparations. About a tablespoonful of strong ammonia will soften about twenty gallons of London water. Failing ammonia, common washing soda is as good as anything, and is certainly cheap enough for everybody. You can easily tell if you have added enough of the ammonia or soda to the water by feeling it with the hand, when the hard feel of ordinary tap water gives place to the unctuous feel of soft water. JANET.—It is quite impossible to say what is causing noises in the ear without a personal interview. Many conditions, some slight, some grave, produce this symptom, and the necessity for a careful diagnosis is obvious. We would, therefore, be doing you an injustice to attempt to “cure” you. You must go to an aurist and get his opinion on the matter. A course of quinine might do you good, but very likely it would only make you worse. ARIEL.—Sarsaparilla is one of those drugs whose action upon the human organism is practically nil! Indeed, it is not too much to say that, if taken by a man in any quantities, it will produce no effect whatever. It is no new remedy; it has been tried and tried, and found wanting. The decoction of sarsa has a decided action, but it is due to the water in it, and not to the sarsaparilla! HENRIETTA.—The symptom you mention is one of the manifestations of the milder degrees of hysteria. A little rigid mental training would soon cure you. INEXPERIENCED.—The best temperature for a working room is between 55° F. and 60° F. For a bedroom, between 50° F. and 55° F. For the sick-room for ordinary cases, between 55° F. and 65° F. For some respiratory diseases, the temperature must be kept between 62° F. and 70° F. In these diseases the temperature must be kept constant, great care being taken that the room does not get cold in the early hours of the morning.