CLASS II. 1.6.5. OT SENSATION. 143 



the ufual means were employed by his friends to encourage him, 

 by advifing him not to be afraid." By which good advice Le 

 conceived fo much fear, that he ran away-early next morning, 

 and returned in about a week quite well. Did the great fear 

 promote the abforption of the mutter, like the ficknefs occafion- 

 cd by digitalis ? Fear renders the external ikin pale j by this 

 continued decreafe of the action of the abforbents of the fldn 

 might not thofe of the lungs be excited into greater activity ': 

 thus produce increafecl pulmonary abforption by reverie iympa- 

 thy,as it produces pale urine, and even flools,by direct fympathy? 

 M. M. Digitalis ? 



5. Febris Mefenterica. Fever from matter formed in the mef~ 

 cntery is probably more frequent than is fufpected. It commen- 

 ces with pain in the bowels, with irritated fenfitive fever ; and 

 continues many weeks, and even months, requiring oecafional 

 venefection, and mild cathartics; till at length the continuance 

 of the pyrexia, or inflammatory fever, deflroys the patient. This 

 is an affection of the lymphatic glands, and properly belongs to 

 fcrofula ; but as the matter is not expofed to the air, no hectic 

 fever, properly fo called, is induced. 



6. Febris a pure aerato. Fever from aerated matter. A great 

 collection of matter often continues a long time, and is fome- 

 times totally abforbed, even from venereal buboes, without pro- 

 ducing any diforder in the arterial fyftem. At length, if it be- 

 comes putrid by its delay, and one part of the matter thus be- 

 comes aerated by the air given out by the other part ; or if the 

 ulcer has been opened, fo that any part of it has been expofed 

 to the air for but one day, a hectic fever is produced. Whence 

 the utility arifes of opening large abfcefles by fetons, as in that 

 cafe little or no hectic fever is induced ; becaufe the matter is 

 Squeezed out by the fide of the fpongy threads of cotton, and lit- 

 tle or no air is admitted ; or by tapping the abfcefs with a tro- 

 car, as mentioned in ifchias, Clafs II. 1.2- 18. 



In this fever the pulfe is about 1 20 in a minute, and its accefg 

 is generally in an evening, and fometimes about noon alfo, with 

 fweats or purging towards morning, or urine with pus- 

 like fediment -, and the patients bear this fever better than 

 any other with fo quick a pulfe : and laftly, when all the matter 

 from a concealed ulcer is abforbed, or when an open ulcer is heal- 

 ed, the hectic fever ceafes. Here the abforbed matter is fuppo- 

 fed to produce the fever, and the diarrhoea, fweats, or copious 

 muddy urine, to be fimply the confequence of increafed fecretion, 

 and not to confift of the purulent matter, which was fuppofed to 

 fce abforbed from the ulcer. See Sudor calidus, Clafs I. i. 2. 3. 



The action of the air oa ulcers, as we have already (hewn, in* 



creafei 



