SAWS. 



185 



slightly convex. They are used by Tyrolese and Italians to 

 saw up railway-sleepers. Such saws are also used in broad- 

 leaved forests, where there is much large timber, as in the 

 Spessart and the Rhine Valley. 



American straight saws, termed Nonpareil saws (Figs. 97 



!>S. American saw. 



and 98), from Disston & Sons, Philadelphia, are used now 

 largely in Germany ; experience show's that their outturn in 

 broadleaved forests is 35 to 40 per cent, more than that of 



'.'it. Hai/, bow-saw. 



the ordinary straight German saws. In coniferous forests 

 on the other hand, they have not proved superior to the 

 Tyrolese curved saw (Fig. 101). The Nonpareil saw is made of 



Ki<r. loo. Mnhcniian bow-saw. 



the best steel, and has an ingenious contrivance for fastening 

 and removing the handles. 



The bow-saw (Fig. 99), which partakes of the character of a 

 straight cross-cut saw, has a straight thin blade, which is kept 

 rigid by means of a bow. More exertion is required to work 

 it than the other cross-cut saws, and it is serviceable only 



