REPORT OF STATE ENTOMOLOGIST 139 



A MOVABLE EXHIBIT NEEDED. 



Considerable attention has recently been given to devising a 

 plan by which farmers may easily inform themselves concerning the 

 important pests of their crops and the remedies to be used, and it 

 lias been decided that it is very desirable to prepare an extensive 

 exhibit, which can be moved from place to place about the State and 

 which will be largely self-explanatory. The exhibit will consist 

 of three parts, namely: 



i. A series of small, glass-covered boxes, each containing 

 a specimen of one insect or disease and showing the various stages 

 or conditions through which it passes and its effect on plants. These 

 boxes can be taken in the hands and examined closely. 



2. A series of charts showing and explaining the same insects 

 and diseases, and numbered to correspond with the boxes- These 

 charts are necessary in order that the life histories may be under- 

 stood, and will involve the preparation of diagrams to assist in under- 

 standing the more or less intricate life histories. 



3. A pamphlet issued in the regular Experiment Station series 

 of circulars, giving figures made from photographs of the diagrams 

 or boxes and accompanied by explanations and short, easily under- 

 ftood statements regarding preventive measures and remedies. This 

 circular will be issued in sufficient numbers to supply each visitor to 

 the exhibit with a copy, which may be taken home and made ise 

 of in fighting the pests and diseases. 



It is intended that this exhibit shall be shown at county fairs, 

 the state fair, on special agricultural trams, and that it shall be 

 placed in the chamber of commerce of each town for a brief period. 



RELATION OF THE STATE ENTOMOLOGIST'S OFFICE TO OTHER 

 ORGANIZATIONS IN THE STATE. 



Activities in the control of insect pests in Montana naturally 

 fall under two headings, namely, scientific or investigational, and 

 practical. 



In order that we may know how best to proceed in the practical 

 control of the insects or diseases it is first necessary to know the 

 habits of the insects and to perform experiments with insecticidal 

 substances that give promise of being effective, or to discover the 



