60 EXPERIMENT STATION. [Jan. 



of years to provide complete data, and they will therefore be 

 continued. 



The importance of the second brood of the codling moth in 

 Massachusetts is also still unsettled, though the facts for an- 

 other year can now be added to those previously collected. 

 This question is an important one, as the answer to it may 

 determine the value of a late treatment for this insect. 



The onion thrips was a less serious pest in 1908 than in the 

 preceding year, if conditions in all parts of the onion-growing 

 region be considered, though it was very injurious in some 

 places. This insect, which is widely distributed both in Europe 

 and the United States, is known to feed on about fifty different 

 plants, and was reported by Packard in 1872 as seriously in- 

 juring onions in Essex County, Mass., causing a probable loss 

 there that year of $10,000, and as having been known as an 

 onion pest in that region for about fifteen years. 



Various methods for the control of this insect in the onion 

 fields have been tested during the past two years, with more or 

 less success, but without entire satisfaction, and it is now the 

 intention to try other measures for its destruction, and extended 

 experiments along these lines will be undertaken during the 

 coming season. 



The results of tests of a new material for the San Jose scale, 

 referred to in the last report, were encouraging and were there- 

 fore repeated last sj)ring, but with less success, the material 

 seeming to be different from that previously used. It is prob- 

 able that farther experiments with this substance will be neces- 

 sary before its real value can be determined. 



The cranberry insect investigations, conducted at Wareham 

 during the summers of 1906 and 1907 by Dr. H. J. Franldin, 

 have resulted in many additions to our knowledge of these pests, 

 and have led to the formulation of numerous recommendations 

 as to methods of treatment. Practical tests of these, repeated 

 for several years, would now be in order, but to make them, 

 entire control of a bog is necessary, and it has thus far proved 

 impossible to obtain a bog for experimental purposes of this 

 kind except on terms which could not be accepted. Under such 

 circumstances it has been impossible to accomplish much during 

 the past summer, and it would eeem doubtful if very much more 



