Pomaceous Fruits 



63 



Fire-blight was first described in 1794 from the Hudson 

 Valley, whence it spread in every direction, reaching Califor- 

 nia about 1900. In many cases even whole orchards have 



■■——A ; -^^tmr.--^ mim^ms- ^■■^— 



P'iG. 30. — Fire-blight; healthy and diseased twigs. 

 Original. 



succumbed to its attack. One pear grower near Washing- 

 ton, D. C, estimated his loss from this one disease in one 

 year at $10,000. It is as yet confined to North America and 

 is more severe in the Southern than in the Northern states. 



