CnAi'. XXV.] IMrr.EMENTS USED IN FKEXCTI rJAlJDEXS. 449 



tional turn or two ^Yllcn required. If the wire l)e very long, 

 several loops may be made at equal distances apart. This method 

 of tightening has this advantage over almost all others, that if the 

 power applied be too great for the strength of the wire it will 

 always give way at A, never at or beyond B ; thus the loop alone 

 comes off, without at all affecting the tightened wire." IM. Jean 

 Sisley, of Lyons writes : " A fruit-grower of our city — M. Kavet 



open Loop. 



Loop after three turns. 



— uses the following simple and effective mode of tightening 

 wires. On the wire to be tightened he makes a loop A (as in the 

 figure), through which he passes a piece of wire (B), which he 

 turns round the pole C, to which the wire is to be fixed, and with 

 pincers he twists the two ends (D) till the wire is tightened. 

 l^Iany persons who use the raidisseurs hitherto employed, have 



complained that it is sometimes difficult to tighten the wire pro- 

 perly with them. The raidisseur has been turned up to a certain 

 point, and the wire is still rather loose, but another turn of the 

 raidisseur will break it, and to avoid this the wire is allowed to 

 remain slack, which is very unfavourable to effective training, 

 and moreover has a very slovenly appearance. The screw and 

 bolt tightener obviates this difiiculty. A glance at the next cut 

 will show how it is used. One end of the wire having been made 



