6 



THE PERIODICAL CICADA IN 1911. 



ever, indicates that trees thoroughly sprayed with Bordeaux mixture 

 or lime wash are apt to be avoided by the cicada, especially if there are 

 other trees or woods in the neighborhood on which they can oviposit. 

 The most reliable means of protecting nurseries and young orchards 

 is by collecting the insects in bags or umbrellas from the trees in early 

 morning or late evening, when they are somewhat torpid. Such 

 collections should be undertaken at the first appearance of the cicada 

 and repeated each day. 



Approved. 



James Wilson, 



Secretary of Agriculture. 

 Washington, D. C, January 3, 1911. 



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