From the above exposition of the opinions of the ancients regarding the causus, or ardent fever, the medical reader will readily recognize its identity with the bilious remittent fever of Sir John Pringle and other English authors. If there were any doubt on this head, it would be set aside by the description of the symptoms of ardent fever which is given by the late Dr. Robert Jackson, as they were manifested in his own person during a severe attack of it. (On Fever, 403.) Some late writers have confounded the causus of the ancients with synocha, or inflammatory fever. But, as we have said, and as was correctly stated by Baccius, the causus was decidedly of the continual or remittent type, and nearly allied to the tertian intermittent. (De Thermis.) Hoffman remarks that it seldom appears in the more temperate parts of Europe, but is very common in Asia, Greece, and Italy; and hence the frequent mention of it in the works of Hippocrates, Galen, and Aretæus. (Oper. t. ii, § 2, c. 2.) Homer says that the dog-star brings many fevers upon unhappy mortals (Iliad, xxi, 31); and his commentator Eustathius remarks that the poet correctly refers the origin of ardent fevers to the heat of the dog-days. SECT. XXX.—THE CURE OF ARDENT FEVERS. Either of the following things must take place, that this fever may terminate completely; the bilious humours must either be evacuated or extinguished. They are evacuated then by sweating, vomiting, or purging downwards; but they are extinguished by cold drink, with which we have entirely cured ardent fevers. For diet, those in causus should not take water alone, nor mead alone, but boiled mead much diluted with water; for the food of such persons ought to consist entirely of drinks. The bath will suit with those only affected with causus who are free from all inflammatory and erysipelatous swelling. And if they exhibit signs of concoction, it will suit still better with them; but not so if the fever be occasioned by a saltish humour. These should be supported with the juice of ptisan. * * * * *