The _urine_ was in some cases plentiful, and of a high colour. It was at times clear, and at other times turbid. About the 4th or 5th day, it sometimes assumed a dark colour, and resembled strong coffee. This colour continued, in one instance, for several days after the patient recovered. In some, the discharge was accompanied by a burning pain, resembling that which takes place in a gonorrh[oe]a. I met with one case in which this burning came on only in the evening, with the exacerbation of the fever, and went off with its remission in the morning. A total deficiency of the urine took place in many people for a day or two, without pain. Dr. Sydenham takes notice of the same symptom in the highly inflammatory small-pox[24]. It generally accompanied or portended great danger. I heard of one case in which there was a _suppression_ of urine, which could not be relieved without the use a the catheter. [24] Wallis's edition, vol. i. p. 197. A young man was attended by Mr. Fisher, one of my pupils, who discharged several quarts of limpid urine just before he died. Dr. Arthaud informs us, in the history of a dissection of a person who died of the yellow fever, that the urine after death imparted a green colour to the tincture of radishes[25]. [25] Rosier's Journal for January, 1790, vol. xxxvi. p. 380. Many people were relieved by copious _sweats_ on the first day of the disease. They were in some instances spontaneous, and in others they were excited by diluting drinks, or by strong purges. These sweats were often of a yellow colour, and sometimes had an offensive smell. They were in some cases cold, and attended at the same time with a full pulse. In general, the skin was dry in the beginning, as well as in the subsequent stages of the disease. I saw but few instances of its terminating like common fevers, by sweat after the third day. I wish this fact to be remembered by the reader, for it laid part of the foundation of my method of treating this fever. There was in some cases a preternatural secretion and excretion of _mucus_ from the glands of the throat. It was discharged by an almost constant hawking and spitting. All who had this symptom recovered. The _tongue_ was in every case moist, and of a white colour, on the first and second days of the fever. As the disease advanced, it assumed a red colour, and a smooth shining appearance. It was not quite dry in this state. Towards the close of the fever, a dry black streak appeared in its middle, which gradually extended to every part of it. Few recovered after this appearance on the tongue took place.