I14 INJURIOUS INSECTS OF I909 AND IQIO. 
THE FRANKLIN CABINET FOR ALCOHOLIC MATERIALS. 
As material preserved in alcohol or other liquid is often de- 
stroyed, or becomes much deteriorated by the liquids evaporating, 
it is desirable that vials containing materials so preserved should be 
kept in a place wherein the humidity is continuously at saturation 
point. When vials are left out, as they usually are, each having 
Fig. 65. The case closed. 
no particular place, they usually become dusty, and are difficult to 
keep in order. In view of these facts the cabinet described below 
was originated for the purpose of keeping alcoholic material clean, 
