FIELD BOOK OF PONDS AND STREAMS 



of gimlet holes down the center, each about half an inch deep. 

 The specimen is pinned in the regular way and then placed 

 dorsal side down on the board with the head of the pin reach- 

 ing to the bottom of one of the holes. The wings are carefully 

 outstretched with a piece of paper pinned across each one, and 

 the specimen is then left in a safe place to dry. 



NeT-s|3inn'ma lory© 

 Of C acid is uioi^rn 



r^iF^ 



Li|e» HisTori-j c^ ttie, CoJjis -flu Vlt|droJ36i(che. 





Met of l-lu3n>t£i^cVie 



Cadoi& j-lu ea^ on iwia 



Streamy Slooi SJtreamj "R^nos Streams Streams 

 Cases maje \f\ diffcreoT s|?cci«.a o^ Ca<lo ' o uxwm 6 



Fig. 40. — A " Riker box " showing how caddis flies 

 may be mounted to show their habits and life history. 



4. — " Riker boxes" are shallow boxes with glass covers (Fig. 

 40). They ma}- be made by hand but it is generally more 

 economical to purchase them ready for use from supply dealers. 

 Each box is fitted with a layer of glazed cotton upon which 

 specimens can be arranged together with whatever descriptions 

 are to be included. After specimens and labels are in position 

 the glass cover is pressed close down over them and carefully 

 sealed on with binding tape, or some other fastening, which 

 will make the box pest-proof. Specimens in "Riker boxes" 



44 



