CLASS IV. 2. i. 4. OF ASSOCIATION. 401 



other means have failed. When young infants ate afflicted 

 with griping joined with coftivenefs, I have fometimes directed 

 them to be taken out of a warm bed, and carried about for i 

 few minutes in a cool room, with almoft inftant relief. 



4. Palkr ex fgritudine. When ficknefs of ftomach firft oc- 

 curs, a palenefs of the (kin attends it ; which is owing to the 

 aflbciation or catenation between the capillaries of the ftomach 

 and the cutaneous ones ; which at firft act by direct fympathy. 

 But in a ihort time there commences an accumulation of the 

 fenforial power of aflbciation in the cutaneous capillaries during 

 their ftate of inactivity, and then the ikin begins to glow, and 

 fweats break out, from the increafed actions of the cutaneous 

 glands or capillaries, which is now in reverfe fympathy with 

 thofe of the ftomach. So in continued fevers, when the ftom- 

 ach is totally torpid, which is known by the total averfion to 

 folid food, the cutaneous capillaries are by reverfe fympathy in 

 a perpetual ftate of increafed activity, as appears from the heat 

 of the fkin. 



5. Dyfpnaea a bafaeo frigido. The difficulty of breathing on 

 going up to the middle in cold water is owing to the irritative 

 aflbciation or catenation of the action of the extreme veflels of 

 the lungs with thofe of the fkin. So that when the latter are 

 rendered torpid or inactive by the application of fudden cold, 

 the former become inactive at the fame time, and retard the 

 circulation of the blood through the lungs, for this difficulty of 

 breathing cannot be owing to the preflure of the water imped- 

 ing the circulation downwards, as it happens equally by a cold 

 (hower-bath, and is foon conquered by habitual immerfions. 

 The capillaries of the fkin are rendered torpid by the fubduc- 

 tion of the ftimulus of heat, and by the consequent diminutions 

 of the fenforial power of irritation. The capillaries of the lungs 

 are rendered torpid by the diminution of the fenforial power of 

 aflbciation, which is now excited in lefs quantity by the leflen- 

 ed actions of the capillaries of the {kin, with which they are 

 catenated. So that at this time both the cutaneous and pulmo- 

 nary capillaries are principally actuated, as far as they have any 

 action, by the ftimulus of the blood. But in a fhort time the 

 fenforial powers of irritation, and of aflbciation, become accu- 

 mulated, and very energetic action of both thefe membranes 

 fucceeds. Which thus refemble the cold and hot fit of an in- 

 termittent fever. 



6. Dyjpepfta a pedibus frigidis. When the feet are long cold, 

 as in riding in cold and wet weather, fome people are very- 

 liable to indigeftion and confequent heart-burn. The irritative 

 motions of the ftomach become torpid, and do their office of di- 



VOL. IT, I^D d geftibn 



