SECT. XXIX. 3. RETROGRADE ABSORBENTS. 359 



deftru&ion of the kidneys ; of which many In- 

 ftances are referred to in the Elem. Phyfiol. t. vii. 

 p. 379. of Dr. Haller. 



From all which it muft be concluded, that fome 

 fluids have pafled from the ftomach or abdomen, 

 without having gone through the fanguiferous cir- 

 culation : and as the bladder is fupplied with many 

 lymphatics, as defcribed by Dr. Watfon, in the 

 Philof. Tranf. v. 59. p. 392. and as no other veflels 

 open into it befides thefe and the ureters, it feems 

 evident, that the unnatural urine produced as above 

 defcribed, when the ureters were tied, or the kid- 

 neys obliterated, was carried into the bladder by 

 the retrograde motions of the urinary branch of 

 the lymphatic fyftem. 



The more certainly to afcertain the exiflence of 

 another communication between the ftomach and 

 bladder, befides that of the circulation, the follow- 

 ing experiment was made, to which I muft beg 

 your patient attention : A friend of mine (June 

 14, 1772) on drinking repeatedly of cold fmali 

 punch, till he began to be intoxicated, made a 

 quantity of colourlefs urine. He then drank about 

 two drams of nitre diflblved in fome of the punch, 

 and eat about twenty ftalks of boiled afparagus : on 

 continuing to drink more of the punch, the next 

 urine that he made was quite clear, and without 

 ftnell ; but in a little time another quantity was 

 made, which was not quite fo colourlefs, and had a 

 ftrong fmell of the afparagus : he then loft about 

 four ounces of blood from the arm. 



The fmell of afparagus was not at all perceptible 

 in the blood, neither when frem taken, nor the 

 next morning, as myfelf and two others accurately 

 attended to ; yet this fmell was ftrongly perceived 

 in the urine, which was made juft before the blood 

 was taken from his arm. 



Some 



