HATCH EXPERIMENT STATION 



-or THE- 



MASSACHUSETTS 



AGRICULTURAL COLLEGE. 



BULLETIN NO. 67. 



THE GRASS THRIPS. 

 TREATMENT FOR THRIPS IN GREENHOUSES. 



>!IA."V, 10OO. 



TJie Bulletins of this Station will be sent free to all newspapers in 

 the State and to such individuals interested in farming as may request 

 the same. 



AMHER8T, MASS. : 



PRESS OF CARPENTER & MOREHOUSE, 



1900. 



