SUP. 1. *. 4. THEORY OF FEVER, 457 



verfe fympatfiy ; hence pale urine is made after a full dinner, as 

 lefs of the aqueous part of it is imbibed by the urinary lym- 

 phatics ; and hence the water in anafarca of the lungs and limbs 

 is fpeedily abforbed, when the actions of the lafteals of the 

 ftonvach or inteftiues are weakened or inverted by the exhibition 

 of thofe drugs, which produce naufea, or by violent vomiting, 

 or violent cathartics. 



Hence in diabetes the lafteal fyftem ah ftrongly, at the fame 

 time that the urinary lymphatics invert their motions, and tranf- 

 mit the chyle into the bladder -, and in diarrhcea from crapula, 

 or too great a quantity of food and fluid taken at a time> 

 the lacleals ad ftrongly, and ab'brb chyle or fluids from the 

 ftomach and upper iiueftines -, while the lymphatics of the low- 

 er interlines revert their motions, and tranfmit this over-repletion 

 into the lower interlines, and thus produce diarrhoea ; which 

 accounts for the fpeedy operation of fome cathartic drugs, when 

 much fluid is taken along with them. 



4. Other circles of irritative aflbciate motions of great impor- 

 tance are thofe of the fecreting fyftem ; of thefe are the motions 

 of the larger congeries of glands, which form the liver, fpleen, 

 pancreas, gaftric glands, kidneys, falivary glands, and many oth- 

 ers ; fome of which aft by direcl: and others by reverfe fympa- 

 thy with each other. Thus when the gaftric glands ac~l moft 

 powerfully, as when the ftomach is filled with food, the kidneys 

 act with lefs energy ; as is fhewn by the fmall fecretion of 

 urine for the firft hour or two after dinner ; which reverfe fym- 

 pathy is occafioned by the greater expenditure of fenforial pow- 

 er on the gaftric glands, and to the newly abforbed fluids not 

 yet being fufficiently animalized, or otherwife prepared; to ftim- 

 ulate the fecretory vefTels of the kidneys. 



But thofe very extenfive glands, which fecrete the perfpira- 

 ble matter of the (kin and lungs, with the mucus, which lubri- 

 cates all the internal cells and cavities of the body, claim our 

 particular attention. Thefe glands, as well as all the others> 

 proceed from the capillary vdffeta which unite the arteries with 

 the veins, and are not properly a part of them j the mucous and 

 pertpirative glands, which anfe irom the cutaneous and pulmo- 

 nary capillaries, are aflbciated by direcl: fympathy ; as appears 

 from immerfion in the cold bath, which is therefore attended 

 with a temporary difficult ref ^intion ; while thole from the ca- 

 pillaries of the ftomach and heart and arteries are more gener- 

 ally atTociated by reverfe fympathy with thofe of the cutaneous 

 capillaries ; as appears in fevers with weak pulfe and indigeftion, 

 and at the fame v time with hot and dry {kin. 



The diilurbe3 aftions of this circle of the aflbciate motions of 



VOL. II. L L 1 the 



