THE CAPILLAEIES. 



157 



largest, those of the skin, and especially those of the 

 medulla of bones. 



The form of the capillary network presents considerable 

 variety in the different textures of the body : the varieties 



Fig 49.* 



consisting principally of modifications of two chief kinds 

 of mesh, the rounded and the elongated. That kind in 

 which the meshes or interspaces have a roundish form is 

 the most common, and prevails in those parts in which the 

 capillary network is most dense, such as the lungs (fig. 50), 



* Fig. 49. Magnified view of capillary vessels from the bladder of 

 the cat. A, V, an artery and a vein ; i, transitional vessel between 

 them and c, c, the capillaries. The muscular coat of the larger vessels 

 is left out in the figure to allow the epithelium to be seen : at c', a 

 radiate epithelium scale with four pointed processes, running out upon 

 the four adjoining capillaries (after Chrzonszczewesky, Yirch. Arch. 

 1866). 



