212 INSTRUMENTS USED IN COLLECTING, &C. 



and each joint should be provided with a notch or 

 check, so as to prevent the upper part from warping. 

 Great care ought to be taken in fitting the joints to 

 the brass tubes, so that they may fit exactly, and. 

 thus prevent them from falling to pieces. 



THE FOLDING NET. 



This net must be bound round with a broad 

 welting, doubled, for receiving the side rods. At 

 the top there must be a piece of shamois leather, 

 for the purpose of acting as a hinge, which must be 

 sewed round the welting, divided and attached in 

 the middle, so as to prevent the cross-piece from 

 slipping ; at the lower side there should be about 

 four inches of gauze turned up, so as to form a bag ; 

 there ought to be strings attached, so as to pass 

 through a staple for drawing the net tight on each 

 side. 



When this instrument is used, the handles or 

 rods are to be taken one in each hand, and with 

 this lepidopterous insects may be taken during thoir 

 flight ; and this is performed by opening and shut- 

 ting the net, and secuiing the insects between the 

 folds. It may also be used for collecting cater- 

 pillars. When used for this purpose, the lepi- 

 dopterist must expand it under the trees, bushes, or 

 plants, which they inhabit, and beat the branches 

 with a stick, and the caterpillars will naturally fall 

 on the net. 



