J4 DISEASES CLA&S!. 3. 2. 7. 



In the case from Liverpool, published by Dr. Rollo, the patient 

 did not weigh heavier after sitting ten minutes in a bath of 110 

 degrees of heat; which shews that no part of the diabetic urine 

 was owing to increased cutaneous absorption, and that this dis- 

 ease was not the aqueous but the chyliferous diabetes; and I sup- 

 pose the patient's weighing heavier or not after using a warm 

 bath may depend on the quantity of fluid previously taken by the 

 mouth; as the skin may thence be either in an absorbent or ex- 

 halant state, and owing to a greater or less degree of heat, which 

 may render the quantity of perspiration in the bath greater than 

 the quantity absorbed. See Sect. XXIX. 4. 5. 



7. Sudor lymphaticus. Profuse sweats from the inverted mo- 

 tions of the cutaneous lymphatics, as in some fainting fits, and 

 at the approach of death; and as perhaps in the s.udor anglica- 

 nus. See Sect. XXIX. 5. These sweats are glutinous to the 

 touch, and without increased heat of the skin; if the part is not 

 covered, the skin becomes cold from the evaporation of the fluid. 

 These sweats without heat sometimes occur in the act of vomit- 

 ing, as in Sect. XXV. 9. and are probably the cause of the cold 

 sweaty hands of some people. As mentioned in Sect. XXIX. 

 4. 9. in the case of R. Davis, which he cured by frequent ap- 

 plication of lime. Though it is possible, that cold sweaty hands 

 may also arise from the want of due absorption of the perspirable 

 matter effused on them, and that the coldness may be owing to 

 the greater evaporation in consequence. 



The acid sweats described by Dr. Dobson, which he observed 

 in a diabetic patient, and ascribes to the chyle effused on the 

 skin, must be ascribed to the retrograde action of the cutaneous 

 lymphatics. See Sect. XXIX. 6. 



8. Sudor Jlsthmaticus. The cold sweats in this disease only 

 cover the head, arms, and breast, and are frequently exceeding- 

 ly profuse. These sweats are owing to the inverted motions of 

 the cutaneous lymphatics of the upper part of the body, and at 

 the same time the increased absorptionof the pulmonary absorb- 

 ents: hence these sweats when profuse relieve the present fit of 

 asthma. There is no other way to account for sweats appear- 

 ing on the upper parts of the body only, but by the fluid having 

 been absorbed by the lymphatic branch of the lungs, and effused 

 on the skin by the retrograde movements of the cutaneous lym- 

 phatics; which join those of the lungs before they enter into the 

 venous circulation. For if they were occasioned, as general- 

 ly supposed, by the difficulty of the circulation of the blood 

 through the lungs, the whole skin must be equally affected, both 

 of the upper and lower parts of the body; for whatever could 

 obstruct the circulation in the upper part of the venous system, 



