96 SURGICAL THEBAPEUTICS. 



the roll turned upwfird, gently draws on it away from the start- 

 ing point, unrolls it, and with it surrounds the entire region in 

 retiu-ning to the starting point. This process is continued until 

 the band is exhausted, when it is secured by j)ins or by strings. 

 Thus appUed, it may be laid in a circular manner, when the turns 

 rest exactly upon each other, or in a spiral manner when they 

 overlap each other in part of their width, or in a crossed or figure 

 of eight manner, when the turns cross each other to meet always 

 at a given point. If they are applied upon cylindrical surfaces, 

 the folds generally He smoothly and evenly upon each other as 

 they are successively formed, but if the region is of conical shape 

 or otherwise irregular in form, one of the borders will adapt itself 

 more readily to the parts than the others. Hence the formation 

 of bulging parts or pockets, which render the smooth and proper 

 apphcation of the bandage very difficult, and may interfere with 

 its sohdity. This is avoided by giving to the roller an obUque 

 half twist, which, while it changes the gaping border in its posi- 

 tion, prevents the slackening of the bandage and removes the 

 pocket. This is principally required in the bandaging of the lower 

 part of an exti-emity (Fig. 86). 



The apphcation of bands on double roUs is also subject to the 



Fig. 80.— Uow to Apply a Bdndage. 



