SECT. XXV. 12. AND INTESTINES. 221 



by ftools ; which is otherwife abforbed as foon as produced, 

 and by the immenfe quantity of thin fluid, which is evacuated 

 along with it. 



1 2. But if the flimulus, which inverts the ftomach, be (till 

 more powerful, or more permanent, it fometimes happens, that 

 the motions of the biliary glands, and of their excretory duels, 

 are at the fame time inverted, and regurgitate their contained 

 bile into the blood-veiTels, as appears by the yellow colour of the 

 ikin, and of the urine ; and it is probable the pancreatic fecretion 

 may fuffer an inverfion at the fame time, though we have yet no 

 mark by which this can be afcertained. 



1 3 Mr. . ate two putrid pigeons out of a cold pigeon- 



pye, and drank about a pint of beer and ale along with them, 

 and immediately rode about five miles. He was then feized 

 with vomiting, which was after a few periods fucceededby purg- 

 ing ; theie continued alternately for two hours ; and the purg- 

 ing continued by intervals for fix or eight hours longer. Dur- 

 ing this time he could not force himfelf to drink more than one 

 pint in the whole ; this great inability to drink was owing to the 

 naufca, or inverted motions of the ftomach, which the voluntary 

 exertion of fwallowing could feldom and with difficulty over- 

 come; yet he difcharged in the whole at lead fix quarts; whence 

 came this quantity of liquid ? Firft, the contents of the ftomach 

 were emitted, then of the duodenum, gall-bladder, and pancreas, 

 by vomiting. After this the contents of the lower bowels ; then 

 the chyle, that was in the lacleal vefTels, and in the receptacle 

 of chyle, was regurgitated into the inteftines by a retrograde mo- 

 tion of thefe veflels. And afterwards the mucus depofited in the 

 cellular membrane, and on the furface of all the other mem- 

 branes, feems to have been abforbed ; and with the fluid abforb* 

 ed from the air to have been carried by their refpeclive lymphat- 

 ic branches by the increafed energy of their natural motions, 

 and down the vifceral lymphatics, of lacleals, by the inverfion of 

 their motions. 



14. It may be difficult to invent experiments to demonftrate 

 the truth of this inverfion of fome branches of the abforbent fyf- 

 tem, and increafed abforption of others ; but the analogy of thefe 

 veflels to the inteftinal canal, and the fymptoms of many difeaf- 

 es, render this opinion more probable than many other received 

 opinions of the animal economy. 



In the above inftance, after the yellow excrement was voided, 

 the fluid ceafed to have any frriell, and appeared like curdled 

 milk, and then thinner fluid, and fome mucus, were evacuated : 

 did not thefe feem to partake of the chyle, of the mucous fluid 

 from ail the cells of the body, and laftly, of the atmofpheric moif- 



ture ? 



