SECTION ^-PROFESSIONAL EXHIBIT. 



COLLECTI1VO mSECTS. 



The important apparatus for the collection of insects consists of va- 

 rious styles of nets adapted for different methods of collecting. These 

 are for collecting insects during flight or about flowers, comprising 

 butterfly nets ; for collecting insects from grass or shrubbery, or even 

 trees, comprising beating nets; and nets for collecting aquatic insects, 

 comprising water and dip nets. Several styles of nets for each of these 

 purposes are illustrated in the collection as follows: 



Butterfly IVets. 



The essentials of collecting apparatus of this class are a light ring 

 (preferably made so that it will fold into small compass for packing) 

 and a light, detachable handle, great strength of these parts or of the 

 net itself not being required on account of the fact that the net is used 

 chiefly in the air. The net is of cheese cloth or light muslin, and should 

 be made into a more or less pointed bag, having a length of about three 

 times the diameter of the net ring. 



722. RILEY BUTTERFLY NET. 



Made of two pieces of brass wire, each about 20 inches long, bent 

 half circularly and fastened at one end by a folding hinge, having a 

 check on one side. The other ends are beaten into two square loops, 

 which fit over a square projection on the end of the ferule and are 

 firmly secured by milled screw which fits into the end of the ferule. 

 This allows easy removal and folding into small space for convenient 

 carriage. 



723. THE SCHONBORN BUTTERFLY NET. 



This net is similar to the previous, but differs from it in the mode of 

 attachment of the ring to the ferule. The ferule is double and the 

 inner piece is deeply grooved on either side to receive the prolongation 

 of the wire forming the ring. The outer ferule, which is slid down on 

 the handle while the ring is being put in place, is then pushed up over 

 the inner ferule, firmly clamping the ring in place and forming a very 

 strong and satisfactory attachment. 



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