Pereira || enumerates the following instances in which the internal use of Ammonia proves serviceable, as a stimulant and sudorific. In continued Fevers, which have existed for some time, and where all violent action has subsided, and the brain does not appear much disordered, it is occasionally of great service. Its diaphoretic action should be promoted by diluents and warm clothing. (According to Richardson, however, Ammonia is contra-indicated in fevers of a typhoid type. See article Ammonia.) In intermittent Fevers, it is sometimes of advantage, given during the cold stage, to hasten its subsidence. In the Exanthemata, when the eruption has receded from the skin, and the extremities are cold, it is sometimes of great benefit, on account of its stimulant and diaphoretic properties. When the recession arises from, or is connected with, an inflammatory condition of the bronchial membrane, it is inadmissible. The usual treatment must then be adopted. In some Inflammatory Diseases, especially Pneumonia and Rheumatism, where the violence of the vascular action has been reduced by proper evacuations, and where the habit of the patient is unfavourable to the loss of blood, Ammonia has proved serviceable. In combination with decoction of Senega, Dr. Pereira has found it valuable in chronic pulmonary affections.

* Med. Chir. Rev. Jan. 1844.

Med. Gaz. April 7, 1843.

On Dis. of the Skin, 1851, p. 448.

§ Op. cit. p. 430.

|| Mat. Med. vol. i. p. 444.