1 6 Director's Annual Report. 



the tray.s are p3rforated to permit the free circulation of gas in 

 fumigation; each tray has a folding handle with label holder, and 

 on the outside doors are similar but larger holders for the case 

 number and contents (see labels in actual size above). The 

 weight of the empty cases without specimens but with the full 



3. RACK FOR STEKIv STORAGE CASES. 



content of trays is, single unit, 14 trays, 170 pounds; double unit, 

 28 trays, 210 pounds. To house the kapa specimens and such 

 mounted bird specimens as should be kept in the dark, light 

 shelves of redwood are found satisfactory. The insect cases are 

 all of the double type, of the same exterior size, but the trays do 

 not have perforations but interior rims covered with an upper 



surface of felt on which the glass cover rests. 



[■32] 



