110 THE SECRETIONS: 



2d. Blood or its constituents. Voigtel 1 observed an instance 

 of bloody sweat from under the arm of a young man ; it ap- 

 peared after any violent exertion. In scurvy, putrid fever, 

 and typhus icterodes, bloody sweat has likewise been observed. 



3d. Uric acid is stated to have been found in the sweat of 

 arthritic persons (Stark). Wolff 2 found that the sweat which 

 had hardened on the forehead into a solid white substance, (in 

 a patient with stone in the bladder,) contained uric acid. Urate 

 of soda is likewise stated to have been found in the sweat of 

 persons suffering from gout or stone. 



4th. Ellin and biliphmn have been found in the sweat of 

 persons with jaundice, and sometimes in such large quantity as 

 to colour the linen yellow, and to communicate a bitter taste 

 to the perspiration. According to Berend, the sweat in febris 

 putrida biliosa likewise contains bile-pigment. 



5th. Red colouring matter of the urine (uroerythrin] was found 

 by Landerer 3 in sweat from the axilla of a fever patient. A 

 blue colouring matter, doubtless allied to cyanurin, has occa- 

 sionally been observed in the sweat. Dr. Bleifuss 4 has seen blue 

 sweat from the foot of a patient with disease of the abdomen. 

 Michel has likewise observed it in an hysterical woman and in 

 a hypochondriacal man ; it was most marked on the right side 

 of the body. Billard 5 observed a blue sweat on the upper part 

 of the body of a girl. 



6th. Fat is stated to occur in colliquative hectic sweats. 



d. Substances altogether foreign to the animal organism may 

 be conveyed, through the process of digestion, into the blood, 

 and thus occur in the sweat. 



Landerer 6 has observed in his own person that after taking 

 large doses of quinine, the sweat assumed the bitter taste of the 

 drug. The following substances enter into, and have been de- 

 tected in the sweat : sulphur, mercury, iodine, iodide of po- 

 tassium, assafoetida, garlic, saffron, olive oil, rhubarb, indigo, 

 Prussian blue, and copper. (Stark, General Pathology, p. 1127; 



1 Stark, p. 1131. Diss sing casum ca i cu i ositat i s . Tub. 1817. 



3 Buchner's Repert. 2d series, vol. 5, p. 234. 



4 Wvirtemberg. Med. Correspond. Blatt. 1835, No. 26. 



5 Froriep's Notiz. 32. 6 Buchner's Repert. 16, p. 238. 



