11H)5.] PUBLIC DOCUMENT — No. 33. 163 



much less thi'ilty and vigorous than the pruned trees of the 

 same varieties. This lack of vigor is so marked that some 

 of the weak trees succumbed more or less completely to the 

 severe freezing of last winter. 



The trees next the unpruned specunens have been headed 

 back two or three times. They were all headed back mod- 



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MAr or ExTEKiMEXTAL ORCHARD. — A sliows apiile trees 40 feet apart; the circles 

 show peach trees unpruned; the half-circles show those slightly headed back; the 

 squares indicate trees severely headed in ; the triangles show trees cut back to stubs ; 

 the blackened figures represent trees whit-h died in 19C>4. 



erately in the spring of 1902 and again in the spring of 1903, 

 and some of them Avere headed back again in the spring of 

 1904. The trees so treated are thick-topped, Avith a good 

 deal of weak, sappy growth on the inside, — a condition 

 Avhich is manifestly objectionable. On the other hand, the 



