238 



ENTOMOLOGY. 



Insect-cabinet. For permanent exhibition, a cabinet of 

 shallow drawers, protected by doors, is most useful. A 

 drawer may be eighteen by twenty inches square, and two 

 inches deep in the clear, and provided with a tight glass 

 cover. 



For a permanent cabinet, says Mr. S. H. Scudder, 

 nothing can excel the drawers made after the Deyrolle 

 model, now in use by the Boston Society of Natural History. 

 " I have tried them for six years, and find them entirely 

 pest-proof. They are made with a cover of glass set in a 

 frame which is grooved along the lower edge and thus fits 

 tightly into a narrow strip of zinc set edgewise into a cor- 

 responding groove in the drawer; the grooves beyond the 

 point of intersection of two sides are filled with a bit of 

 wood firmly glued in place; it is hardly necessary to say that 

 the sides of the drawer and -the frame of the cover should 

 be made of hard wood; soft wood would not retain the zinc 



FIG. 270. Model of the Deyrolle insect-drawer, side view of front end, with the 

 cover raised. D, bottom of drawer; C, cover of same, raised a little; /, front 

 piece, with moulding: (m) and handle (h) glued to bottom piece; sa, sash; si, 

 slit in cover, into which the zinc strip (z) fits; si', slit in bottom, into which 

 it is fastened; g, bevelled groove, to allow the finger to raise the cover; Hv, 

 hind view of one end of the bottom to show the insertion of the bottom (6); 

 Re, reverse of one corner of cover to show the grooves filled beyond their 

 junction. All the figures half size. 



strip; the zinc should be perfectly straight, and the ends 

 well matched; if this be done, nothing can enter the box 



examination, tight boxes, and a free use of chloroform or bisulphide 

 of carbon" (Proc. Ent. Soc. Washington, i. 115). 



