ENQUIRY INTO PLANTS, IV. xni. 6-xiv. 2 



third and fourth it becomes normal again and bears 

 many fair clusters, so that it is quite as good as when 

 it was in its prime. And when it goes off again,^ 

 they say one should dig on the other side and apply 

 the same treatment ; and that so treated the tree 

 lasts for ever ; and this should be done at intervals of 

 about ten years. And this is why those who adopt 

 this treatment never cut down the vine, but the same 

 stems remain for many generations, so that even 

 those who planted the trees cannot remember doing 

 so. However perhaps one should enquire of those 

 who have had experience before accepting this state- 

 ment. These exam{)les may serve for considering 

 which trees are long-lived and which short-lived. 



Of diseases and injuries done by loeeUker conditions. 



XIV. 2 As to diseases — they say that Avild trees 

 are not liable to diseases which destroy them, but 

 that they get into poor condition, and that most 

 obviously when they are smitten with hail when 

 either they are about to bud or are just budding 

 or are in bloom ; also when either a cold or a hot 

 wind comes at such seasons : but that from season- 

 able storms, even if they be violent, they take no 

 hurt,^ but rather that it is good for them all to be 

 exposed to weather : for, unless they are, they do 

 not grow so well. Cultivated kinds however, they 

 say, are subject to various diseases, some of which 

 are, one may say, common to all or to most, while 

 others are special to {^articular kinds.^ General 

 diseases are those ^ of being worm-eaten, of being 

 sun-scorched, and rot.'^ All trees, it may be said, 



" Koiva Sii ri t« conj. W. ; koivo. koX tot« UMV; Koivi- oiov 

 T<{Te Ald.H. • cf. 8. 10. 1. 



391 



