Our next object is to remove the debility, the cause of the pulmonary symptoms. For this purpose, Tonics are indicated, and at their head stands the Peruvian Bark. In the other species of Phthisis, this medicine has been much abused, but in the present one, its use is sanctioned by experience. In the cases proceeding from Leucorrhœa, and long suckling, it is highly recommended by Dr. Fothergill; but he cautions us against persevering in its use, longer than while it is doing good; and remarks, that if the breathing become more oppressed, the cough dry, the pulse more quick and hard, and especially, if slight transitory pains or stitches about the thorax, are more frequently complained of, a perseverance in the use of the bark will increase the disease. If, in consequence of this increase of symptoms, we are obliged to desist in the use of the Bark, other Tonics must be substituted. The combination of bitter and tonic medicines in the Infus: Amar: of the dispensatories may be then usefully prescribed. Columbo, which is sometimes an ingredient in that formula, is particularly recommended by Dr. Thomas Percival, as not possessing any of the injurious properties of bark. The Elixir of Vitriol is also an excellent tonic, and may be usefully given at the same time with the remedies just proposed. But it requires to be administered with the same cautious hand as the bark, and to be discontinued, if the symptoms appear to be at all aggravated by its use. In general, no ill effects arise from it, but if the determination to the chest be so great, as to produce much inflammatory action, it may do injury. Independent of its tonic powers, it will be serviceable in checking any disposition, which may exist, to profuse sweating. Iron, in its various officinal preparations, is also a good remedy, in this form of phthisis. Although, highly dangerous in the primary disease, there is now little danger of increasing the inflammation, which in that form, made it improper. Mineral chalybeate waters, will in this instance, be useful, not only by the journey to them, and the amusement derived at watering places, but may be drank with advantage by the patient. In addition to these remedies, the diet and regimen should be such as is most invigorating to the constitution. A nutritious diet and the moderate use of wine will be proper; and country air and exercise with the same rules as were mentioned in the treatment of primary phthisis, are very important circumstances in the cure of the secondary form. A long journey, a sea-voyage and change of climate are also equally proper. * * * * *