66 DISEASES CLASS I. 2. 2. 8* 



in its general appearance, and probably in its office of affifting di- 

 geftion, by preventing the fermentation of the aliment ; as would 

 appear by the experiments of Pringle and Macbride ; there is rea- 

 fon to fufpect, that a fympathy may exifl between the falivary 

 and pancreatic glands ; and that the perpetual ftimulus of the 

 former by tobacco might in procefs of time injure the latter. 

 See Tobacco, Article III. 2. 2. 



8. Torpor renis. Inirritability or paralyfis of the kidneys is 

 probably frequently miftaken for gravel in them. Several, whc 

 have lived rather intemperately in refpect to fermented or fpir- 

 ituous liquors, become fuddenly feized about the age of fixty, or 

 later, with a total ftoppage of urine ; though they have previ- 

 oufly had no fymptoms of gravel. In thefe cafes there is no- 

 water in the bladder ; as is known by the introduction of the 

 catheter, of which thofe made of elaftic gum are faid to be pref- 

 erable to metallic ones , or it may generally be known by the 

 fhape of the abdomen, either by the eye or hand. Bougies and' 

 catheters of elaftic gum are fold at No. 37, Red Lion-ftreet, 

 Holborn, London. 



M k M. Electric mocks, warm bath. Emetics. See calcu- 

 lus renis, Clafs I. i. 3. 9. When no gravel has been previoufly 

 obferved, and the patient has been a wine-drinker rather than 

 an ale-drinker, the cafe is generally owing to inirritability of 

 the tubuli uriniferi, and is frequently fatal. See Clafs I. 2. 4. 20. 



9. Punfta muccfa vultus. Mucous fpots on the face. Thefe 

 are owing to the inactivity of the excretory ducts of the mucous 

 glands ; the thinner part of this fecretion exhales, and the re- 

 mainder becomes infpiiTated, and lodges in the duct ; the ex- 

 tremity of which becomes black by expofure to the air. 



M. M. They may be prefled out by the finger-nails. Warm 

 water. Ether frequently applied. Blifter on the part ? 



10. Macula cuth fulvx. Morphew or freckles. Tawny 

 blotches on the fkin of the face and arms of elderly people, and 

 frequently on their legs after flight eryfipelas. The freckles on 

 the face of younger people, who have red hair, feem to be a fim- 

 ilar production, and feem all to be caufed by the coalefcence of 

 the minute arteries or capillaries of the part. In a fear after a 

 wound the integument is only opaque ; but in thefe blotches, 

 which are called morphew and freckles, the fmall veflels feem 

 to have become inactive with fome of the ferum of the blood ftag- 

 nating in them, from whence their colour. See Clafs III. I. 2. i 2. 



M. M. Warm bathing. A blifter on the part ? 



11. Canities. Grey hair. In the injection of the veflels of 

 animals for the purpofes of anatomical preparations, the colour 

 of the injected fluid will not pafs into many very minute veflels ;. 



which 



