48 



MISC. PUBLICATION 318, U. S. DEPT. OF AGRICULTURE 



Figure 119. — How to mount 

 specimens of insect and its 

 injury to host. 



VISIT CONTROL PROJECTS. MAKE MOUNTS OF INSECTS 



AND PLANTS 



[Sixth meeting — July] 



1. Piece of glass about 6 by 8 inebes (win- 



dowpane ) . 



2. Shallow box, 6 by 8 by 1 inebes. 



3. Cotton. 



4. Insect and portions of damaged plants 



or products. 



5. Paper for labels. 



6. Tools : Hammer, saw, pincers, chisel, 



etc. 



7. Record sbeets for insect-control experi- 



ment. 



Figure 120. — Mount, 

 complete, showing in- 

 sect and injured host. 



Procedure : 



1. Visit control project. 



a. Compare sprayed and unsprayed plants. 

 6. Select life stages of tbe insect. 

 c. Select typical injury to leaves, fruits, or 

 twigs. 



2. Fit lid for box ; use glass for top. 



3. Place cotton in box. 



4. Arrange insect and damaged leaves, cloth, etc., in 



box. 



5. Fasten lid on box. 



6. Fill out record sheet with information on spray 



for insect control. 



7. Write narrative report Sample copy of a narra- 



tive report appears on page 51. 



CHECK RESULTS OF CONTROL. EXHIBIT CONTROL MATERIAL 



[Seventh meeting — August] 

 Equipment : 



1. Pencil and notebook. 



2. Equipment to weigh or measure crop. 



3. Insect mounts. 



Figure 121. — Materials used in insect studies. 



4. Preserved specimens of immature insects. 



5. Potted plants showing insects and damage. 

 Procedure : 



1. Harvest crop. 



2. Weigh or measure crop. 



3. Record weights or measures for check and control. 



4. Arrange exhibit showing each club member's mounts, preserved insects, 



and potted plant ; also any notes available. 



