

S*CT. XXVI. i. OF GLANDS AND MEMBRANES. 3^ 

 SECT. XXVI. 



OF THE CAPILLARY GLANDS AND MEMBRANES* 



I. i . The capillary veflels are glands. 2. Their excre* 

 tory duels. Experiments on the mucus of the intef* 

 tines , abdomen , cellular membrane, and on the 

 humours of the eye. 3. Scurf on the head, cough, 

 catarrh, diarrhoea, gonorrhoea. 4. Rheitmatifm. 

 Gout. Leprofy. II. i. The moft minute membranes 

 are unorganized. 2. Larger membranes are com- 

 pofed of the duels of the capillaries, and the mouths 

 of the abf or bents. 3. Mucilaginous fluid is fecreted 

 on their furf aces. III. Three kinds of Rheumatifm. 



1. i. THE capillary veflels are like all the other- 

 glands except the abforbent fyftem, inafmuch as 

 they receive blood from the arteries, feparate a fluid 

 from it, and return the remainder by the veins. 



2. This feries of glands is of the moft extenfive 

 ufe, as their excretory duels open on the whole ex- 

 ternal fkin forming its perfpirative pores, and on the 

 internal furfaces of every cavity of the body. Their 

 fecretion on the Ikin is termed infenfibie perfpira- 

 tion, which in health is in part reabforbed by the 

 mouths of the lymphatics, and in part evaporated 

 in the air ; the fecretion on the membranes, which 

 line the larger cavities of the body, which have ex- 

 ternal openings, as the mouth and inteftinal canal, 

 is termed mucus, but is not however coagulable 

 by heat ; and the fecretion of the membranes of 

 thofe cavities of the body, which have no external 

 openings, is called lymph or water, as in the cavi- 

 ties of the cellular membrane, and of the abdo- 

 men ; this lymph however is coagulable by the heat 

 of boiling water. Some mucus nearly as vifcid as 



Z 2 the 



