An intelligent correspondent of mine makes the following valuable remarks on the preservation of ipecacuanha wine: “Now, I know that there are some medicines and chemical preparations which, though they spoil rapidly when at all exposed to the air, yet will keep perfectly good for an indefinite time if hermetically sealed up in a _perfectly full_ bottle. If so, would it not be a valuable suggestion if the Apothecaries’ Hall, or some other London firm of _undoubted_ reliability, would put up 1 oz. phials of ipecacuanha wine of guaranteed purity, sealed up so as to keep good so long as unopened, and sent out in sealed packages, with the guarantee of their name. By keeping a few such ounce bottles in an unopened state in one’s house, one might rely on being ready for any emergency. If you think this suggestion worth notice, and could induce some first-rate house to carry it out, and mention the fact in a subsequent edition of your book, you would, I think, be adding another most valuable item to an already invaluable book.” The above suggestion of preserving ipecacuanha wine in ounce bottles, quite full, and hermetically sealed, is a very good one. The best way of hermetically sealing the bottle would be to cut the cork level with the lip of the bottle, and to cover the cork with sealing-wax, in the same manner wine merchants serve some kinds of their wines, and then to lay the bottles on their sides in sawdust in the cellar. I have no doubt, if such a plan were adopted, the ipecacuanha wine would for a length of time keep good. Of course, if the wine of ipecacuanha be procured from the Apothecaries’ Hall Company, London (as suggested by my correspondent), there can be no question as to the genuineness of the article. _What_ NOT _to do_.—Do not give emetic tartar; do not apply leeches; do not keep the room very warm; do not give stimulants; do not omit to have always in the house either a 4 oz. bottle, or three or four 1 oz. bottles of ipecacuanha wine. 200. _I have heard Child-crowing mentioned as a formidable disease; would you describe the symptoms?_ Child-crowing, or _spurious croup_, as it is sometimes called, is occasionally mistaken for _genuine croup_. It is a more frequent disorder than the latter, and requires a different plan of treatment. Child-crowing is a disease that almost invariably occurs only during dentition, and is _most perilous_. But if a child laboring under it can fortunately escape suffocation until he has cut the whole of his first set of teeth—twenty—he is then, as a rule, safe. Child-crowing comes on in paroxysms. The breathing during the intervals is quite natural—indeed, the child appears perfectly well; hence the dangerous nature of the disease is either overlooked, or is lightly thought of, until perhaps a paroxysm worse than common takes place, and the little patient dies of suffocation, overwhelming the mother with terror, with confusion, and dismay.