State Museum of Natural History. 105 



sandy soil about Manor and Eastport, where it makes an unthrifty 

 straggling growth, its branches are badly infested by the black 

 knot fungus, Phwrightia morbosa, but in those parts of the State 

 where the soil is richer in the elements of plant food, and these 

 trees make a healthy, vigorous growth, they are almost entirely 

 free from this fungus. The practical application of this principle 

 is plain. If we would have our cultivated and useful plants as 

 free as possible from the attacks of injurious parasitic fungi, we 

 must maintain their constitutional vigor and give them a full 

 supply of plant food. 



Respectfully submitted, 



CHARLES H. PECK. 



Albany, December 10, 1888. 



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