August, '10] GOSSiARD: FAIR EXHIBITS 335 



holds the finished combination, the lot being grouped together. Printed direc- 

 tions for mixing the sprays cut from our spray calendar are pasted beneath 

 each group of vials. Represented among these insecticides are ten poisons, 

 one trap, four repellents, two fumigants and twelve contact insecticides. The 

 vials are fastened in the cases by means of wires bent to fit over them and run- 

 ning through holes drilled in the bottom of the case. The wires are twisted 

 together by means of pliers, and cut off on the outside. Some heavy paper 

 and muslin serve to cover these little wire snags and thus prevent accidents. 



9. Insects of the Black Locust. 



Eight species and specimens of injury. 



10. The Seventeen-year Cicada and different stages of the insect's life history 



and specimens of its injury. Also specimens of the Dog-day Cicada and 

 examples of injury for comparison. 



11. Some Beneficial Insects. 



Dragon flies, lady beetles, tiger beetles, honey bees, bumble bees, lacewing 

 flies, ground beetles, ichneumon flies, parasitic flies, etc. 



12. Some Ohio Insects. 



A partial type collection to illustrate the different orders and also including 

 showy speicmens to attract attention. 



13. Some Insect Galls. 



Specimens of galls made by several species of insects, among them the 

 Grape Phylloxera. 



14. Some Garden Insects. 



Different stages of Colorado Potato Beetle, Striped Cucumber Beetle, Radish 

 Maggot, Flea Beetles, Squash Bug, and others, with examples of their injuries. 



15. Clover Root Borer. 



Different stages of its life history, and examples of injury to roots and 

 effect on tops. 



16. Grain Insects. 



Hessian fly in its different stages, snapping beetles and wireworms. Meal 

 Snout Moth in different stages and examples of injury. Chinch Bugs, May 

 Beetles and White Grubs, with samples of injured wheat and corn plants, 

 including roots. 



17. Catalpa Midge. 



Different stages of insect and examples of damaged leaves, pods and shoots. 



18. Educational Case. 



Methods of preserving insects. Contains spreading board with butterflies 

 of different sizes spread on it; cyanide killing bottle, vial of insect pins, card- 

 board points on pins and insects mounted on points, dissecting needles, punch 

 for making points (a worn and discarded utensil) and miniature net. Meth- 

 ods of pinning and mounting different orders of insects are shown. 



There are six additional cases which are practically duplicates of 

 some of the foregoing. These are used for county fairs when two 

 exhibits are shown at different fairs on the same dates. 



Case Racks 



Folding racks as shown in Fig. 1, PI. 23, are set on tables to hold 

 the cases. Each rack will hold four cases. (See Fig. 1, PI. 22). 

 Poplar wood, stained black, is used for their construction. 



