OF THE VASCULAR GANGLIA. 



net-work of arteries and veins, which communicate by innu- 

 merable anastomoses, like the capillary vessels, but much 

 wider, especially the veins, easily injectable by the neighbour- 

 ing veins, which are sometimes varicose, but with difficulty 

 by the arteries. 



This alteration most commonly exists in the substance of 

 the skin, and to a greater or less extent. It then sometimes 

 resembles the crest and other similar parts of the gallinaceous 

 birds. The skin of the face, and especially that of the lips, is 

 frequently the seat of this alteration. It is observed in the 

 subcutaneous cellular tissue, or more or less deep; it has been 

 seen occupying a whole member; it is even asserted to have 

 been observed in some viscera. 



This production is the seat of a vibration, a rustling, and a 

 pulsation, more or less manifest, and which are increased by 

 all the causes which excite the activity of the general circula- 

 tion; but the tumours which it forms, even in the skin, are by 

 no means susceptible of a kind of isolated erection. U is most 

 commonly congenital, and at other times appears to depend 

 on an accidental cause; it sometimes continues without change, 

 at others, which is the most common case, it augments contin- 

 ually in size by the dilatation of its internal cavities, and at 

 length bursts, giving rise to haemorrhages, which are difficult 

 to repress. 



Around the arms there occur hemorrhoidal tumours, resem- 

 bling the spleen in appearance, which constitute a variety of 

 this accidental erectile tissue. 



III. OF THE VASCULAR GANGLIA. 



403. The vascular ganglia, adenoid or glandiform organs, 

 or aporic glands,* confounded under the common name of 

 glands with organs of excretory secretion, are also parts in 



* Queitschius, De glandulls coeds, &c. in select, med. Franco/. Hendy, 

 Essay on glandular secretion. Hewson, Descriptio glandul. SJc. opus posthum . 

 in op. omn. H. F. F. Leonhardi, De glandulis in genere et glandulis apori- 

 cis t &fc. Dresden, 1813. 



