The following table exhibits the ages of three hundred and twenty-six females, at which they began to menstruate. It is furnished me by Mr. Robertson, in the _North of England Medical and Surgical Journal_. In their 11th year, 6 12th „ 12 13th „ 31 14th „ 60 15th „ 72 16th „ 54 17th „ 50 18th „ 19 19th „ 18 20th „ 4 To this list may be added the case related by Madame Boivin, in her account of a new case of abortion. The subject of this case commenced to menstruate at seven years of age, and did so regularly after her tenth year. Footnote 2: We could record a number of instances where the menses were continued much beyond their ordinary period, and where, after ceasing some time, they were resumed with their accustomed regularity; but we shall limit our observations to one case, and that because it is recent and well authenticated. This case is recorded in the _Ann. Univ. de Med._ A female aged ninety-four continued to menstruate from the fifty-third to the ninety-fourth year. Her relatives were remarkable for their longevity; she is at present in perfect health.—_American Journal of the Medical Sciences for Feb. 1831._ Footnote 3: _Diaphoretic Powder._ Take of Gum Opium, half a drachm Camphor, two drachms Pulverized Ipecacuanha, one drachm Cream of Tartar, or super-carbonate of soda, one ounce Pulverize all separately, then mix. It is best to use pulverized opium. _Dose_—Ten grains, or half a teaspoonful, as often as may be necessary. _Use_—This forms a valuable anodyne, diaphoretic and sudorific. It is beneficially administered in fever, St. Anthony’s fire, diarrhœa, dysentery, and cholera morbus, and in all cases where an anodyne, combined with a sudorific, is required. In these diseases it should be administered in small doses. It is also applicable to many other diseases, such as rheumatism, gout, &c. It promotes perspiration without increasing the heat of the body. It produces a constant moisture of the skin for a great length of time, while it allays irritation. Footnote 4: