Aëtius conducts the treatment upon the same principles as Galen, and the directions which he gives for the application of the different remedies are most important. He states most decidedly, that unless venesection is had recourse to, the patient will be in the utmost danger, and can only be saved by the strength of his constitution, or some critical evacuation. When the stomach is loaded, however, he forbids depletion, because, by emptying the veins, the distribution of the crudities in the _primæ viæ_ will be accelerated. When the menstrual or hemorrhodial discharge is expected, he directs us to bleed less profusely than otherwise. Persons of a hard, sanguine, and compact habit of body are said to bear bleeding best. In practising venesection, he directs the physician to pay more attention to the strength of the patient than to the period of the fever. He is particularly earnest in recommending the use of cold drink: he directs it to be given at the acme of the disease, but not at the commencement. He forbids us to administer it freely when there is obstruction or inflammation of an internal viscus; and states many serious evils which may arise from the unseasonable administration of cold water, although it be an excellent remedy when given at the proper time. With regard to diet, he directs nothing but ptisan to be given for the first three days. On the fourth he recommends the bath. Through the whole course of the fever the food is to be light, unless the powers of the patient be very feeble. As the other Greek authorities differ in no material respect from the principles of treatment laid down by Galen and Aëtius, we need not enter upon any minute exposition of their views of practice. As a specimen, however, of the practice of the later authors, we shall briefly mention that of Synesius and Constantinus Africanus. They approve of bleeding, unless the stomach be loaded with crudities; in which case they forbid the operation until these are concocted or discharged. They recommend diluents; and, if the belly is constipated, clysters, with decoctions, containing tamarinds, damascenes, manna, and the like. To remove the remains of the febrile excitement in the decline of the fever, they direct medicines of a refrigerant nature to be given, such as camphor, the seeds of melons, cucumbers, gourds, and the like.