APPLES AND PEAES AS LATEEAL COEDONS 89 



them, wtich by resisting radiation gives great intensity 

 to frost just above its surface, it is necessary either to 

 carefally remove the snow, to bank it up so as to 



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completely cover the cordons, or to thatch them with a 

 covering of evergreen branches, such as furze, or of firs ; 

 fern would also be a safe protection — better than all are 

 wooden ridges made of f -inch boards, so as to cover two 



