Sup. 1. 6. 4. THEORY OF FEVER. 457 



verfe fympathy ; 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 lacteals of the 

 ftomach or inteftines are weakened or inverted by the exhibition 

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

 or violent cathartics. 



Hence in diabetes the lacteal fyftem acts ftrongly, at the fame 

 time that the urinary lymphatics invert their motions, andtranf- 

 mit the chyle into the bladder ; and in diarrhoea from crapula, 

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

 the lacteals act ftrongly, and abforb chyle or fluids from the 

 ftomach and upper inteftines ; while the lymphatics of the low- 

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

 into the lower inteftines, 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 theft 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 act by direct and others by reverfe fympa- 

 thy with each other. Thus when the gaftric glands act mod 

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

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

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

 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 veiTels 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 bodv, claim our 

 particular attention* Thefe glands, as well as all the others, 

 proceed from the cap'Ilary veilels which unite the arteries with 

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

 peripir.itive glands, which arife from the cutaneous and pulmo- 

 nary capillaries, are a:iociated by direct fympathy ; as appears 

 from immerfion in the cold bath, which is therefore attended 

 with a temporary duficult refpiration ; while thofe from the ca- 

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

 ally auociated by reverfe fympathy with thofe of the cutaneous 

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

 and at the fam time with hot and dry ikin. 



The diiturbed actions of this circle of theailbciate motions of 



Vol. II. L l 1 the 



