1. A chilly fit accompanying the attack of the fever. The longer this chill continues, the more favourable the disease. 2. The recurrence of chills every day, or twice a day, or every other day, with the return of the exacerbations of the fever. A coldness of the whole body, at the above periods, without chills, a coldness with a profuse sweat, cold feet and hands, with febrile heat in other parts of the body, and a profuse sweat without chills or coldness, are all less favourable symptoms than a regular chilly fit, but they indicate less danger than their total absence during the course of the fever. 3. A puking of _green_ or _yellow_ bile on the first day of the disease is favourable. A discharge of black bile, if it occur on the _first_ day of the fever, is not unfavourable. 4. A discharge of green and yellow stools. It is more favourable if the stools are of a dark or black colour, and of a f[oe]tid and acrid nature, on the first or second day of the fever. 5. A softness and moisture on the skin in the beginning of the fever. 6. A sense of pain in the head, or a sudden translation of pain from internal to external parts of the body, particularly to the back. An increase of pain after bleeding. 7. A sore mouth. 8. A moist white, or a yellow tongue. 9. An early disposition to spit freely, whether excited by nature or the use of mercury. 10. Blood becoming sizy, after having exhibited the usual marks of great morbid action in the blood-vessels. 11. Great and exquisite sensibility in the sense of feeling coming on near the close of the fever. 12. Acute pains in the back and limbs. 13. The appearance of an inflammatory spot on a finger or toe, Dr. H. M'Clen says, is favourable. It appears, the doctor says, as if the cause of the fever had escaped by explosion. Signs of great danger, and of an unfavourable issue of the yellow fever are, 1. An attack of the fever, suddenly succeeding great terror, anger, or the intemperate use of venery, or strong drink. 2. The first paroxysm coming on without any premonitory symptoms, or a chilly fit. 3. A coldness over the whole body without chills for two or three days. 4. A sleepiness on the first and second days of the fever. 5. Uncommon paleness of the face not induced by blood-letting. 6. Constant or violent vomiting, without any discharge of bile. 7. Obstinate costiveness, or a discharge of natural, or white stools; also quick, watery stools after taking drink. 8. A diarrh[oe]a towards the close of the fever. I lost two patients, in 1797, with this symptom, who had exhibited, a few days before, signs of a recovery. Dr. Pinckard informed me, that it was generally attended with a fatal issue in the yellow fever of the West-Indies. Diemerbroeck declares, that "scarcely one in a hundred recovered, with this symptom, from the plague[6]." [6] Lib. i. cap. 15. 9. A suppression of urine. It is most alarming when it is without pain. 10. A discharge of dark-coloured and bloody urine.