CtFLTIVATION. 



209 



The Schlegel, Mogling and Gohler frames are also of 

 the high type, but without any specially novel features. 

 Like the two first-named they are not 'very storm proof. 



An active promoter of frame training was Friedrich 

 Wirth of Kaltenberg, near Tettnang, who himself invented 

 and experimented with a series of different systems. Of 

 these two have found extensive application, namely, the 

 high, vertical system and the trestle system, either in their 

 original form, or modified. 



Fig. 51. — Wirth'^ high vertical-wire frame. 



Wirth's vertical 28-foot wire frame ^ (Fig. 51) is charac- 

 terised by great simplicity, but is not sufficiently proof 

 against rough weather. The arrangement is as follows : — 



Frame posts are erected between the sixth and seventh, 

 twelfth and thirteenth plants (and so on) in every other 

 row, the posts at the ends of the garden being joined to- 

 gether by poles or spars, and the interior parallel rows of 



' Wirth, Ber HopfenhoM (Stuttgart, 1878). 

 14 



