16 



undue increase of the palmer worms. Should a second genera- 

 tion of the latter appear during the present summer, or should we 

 have another visitation of them next year, or at any future time, 

 some means for arresting their depredations may become neces- 

 sary. Showering the trees with soap-suds, or a solution of whale- 

 oil soap, or with lime-water, dusting ashes or air-slacked lime on 

 the leaves, when wet with dew or rain, or casting dry sand upon 

 the trees, may be found serviceable. T. W. HARRIS. 



Cambridge, Mass., July 19, 1853. 



