1911.] PUBLIC DOrrMENT — No. 31. 23 



aiul went into llic wiutci- in good condition, having made sutii- 

 (.'ient growth to atiord the needed protection. 



Research. 



I^Iorc research work has been done in the station during the 

 past year than in any previous year of its history. The addi- 

 tions to our staff which have made this possible have already 

 been referred to. Work still continues upon the various re- 

 search problems which have been mentioned in earlier reports/ 

 but the studies of Pyralida^ and Tortricidse which Dr. C. H. 

 Fernald has been conducting have been nearly brought to a con- 

 clusion, and the results in part already privately published.- 

 The scope of our research work has been broadened during the 

 year by the addition of two new lines of work, i.e., an investi- 

 gation of the solubility effect of ammonium sulfate on the soil 

 of field A ; and color vision in bees. The progress made in most 

 of these lines of investigation has been satisfactory, but there 

 has been some interruption on account of moving the entomo- 

 logical work into the new building, and on account of ill health 

 of members of our staff, apparently due to overwork. In both 

 departments in which such interruption has occurred changes 

 (already referred to) have been made, including the provision 

 of an additional assistant in each, which, it is believed, will 

 make it possible to push the work of investigation more rapidly. 



In the later pages of this report will be found a numl)er of 

 valuable technical papers based upon some of the investigations 

 in progress. The more important of these are as follows : — ■ 



Studies in Milk Secretion. 



The Determination of Ai'senie in Insectieides. 



The Purification of Insohible Fatty Acids. 



The Soluble Carbohydrates in Asparagus Roots. 



Abnormalities of Stump Growth. 



Climatic Adaptations of Apple Varieties. 



The progress which has been made in our work with aspara- 

 gus and cranberries, and the greatly increased facilities for 



' For full Hat see Part I., twenty-second annual report. 



' On the Date3 of Jacob ITubner's Sammhing europiiischer Schmettprlina:o and SomeofUig 

 Other Works, C. H. Fernald, Ph. D.. author and publisher; The Genera of the Tortrieida; and 

 theirtypoa, C. H. Fernald, Ph.D., author and publisher. 



