124. 



HA RDW ICKE'S SC I EN CE-GO S S I P. 



by a piece of catgut", as shown in fig. 79. The 

 catgut, being flexible, will adapt itself (see the 

 dotted line) to the surface of a tree trunk when 

 pressed against it. With regard to insects cap- 

 tured at sugar, they arc usually remarkably quiet, 



Fig. 79. Net for Sugaring. Fig. 80. Box with linen joints. 



and may be boxed without dilEculty, and, with a few 

 exceptions, may be conveyed home in the boxes, care 

 being taken to let each have a separate apartment. 

 The boxes should be strengthened Avith strips of 

 linen pasted round the joints, as shown in fig. SO, 

 otherwise accidents may occur, particularly on M'et 

 evenings or on rough ground. The skittish indi- 

 viduals may be best captured by means of the 

 sugaring-drum, of which a cut is given in fig. 81. 

 This apparatus consists of a cylinder, one end of 

 which is covered with gauze, the other provided 

 with a circular valve, which works in a slit. For 



Fig. 81. Sugaring-drum. 



use, the valve is opened and the cylinder placed 

 over the insect, which naturally flies towards the 

 gauze ; then the valve is closed, the corked piston, 

 shown at the lower part of the cut, placed against 

 it, the valve re-opcncd, the piston pushed up to the 

 gauze, the insect pinned through the gauze, and 

 the piston withdrawn with the insect transfixed 

 it to. 



Light is another most profitable means of at 

 tracting. The simplest way is to place a powerful 

 moderator lamp upon a table in front of an open 

 window which faces a good locality, and then wait 

 net in hand for our visitors, which usually make 

 their appearance late in the evening, and continue 

 to arrive until the small hours. Those ^^ho prefer 



J3|^.:i!:i''^''^'f'if"''"jf[iiiJ!| 



Fig. 82. Cyanide-bottle and Ferrule. 



it can use the Americau moth-trap, which is self- 

 acting, detaining such insects as may enter itspcr 

 tals, or those who can afford the space may fit up a 

 room on the same principle. Street lamps are very 

 profitable in certain localities, and amply reward the 

 collector who perseveriugly and minutely examines 

 them. The apparatus depicted in fig. 82 is very 

 useful for taking off sueli insects as may be on the 

 glass of the lamp : it consists of a cyanide-bottle 

 attached by a ferrule to the end of a sufficiently 

 long stick. "When placed over an insect, stupefac- 

 tion is quickly produced. A net of the sliape re- 

 presented in fig. 83 is also very useful for getting 

 at the various parts of the lamp. 



>' 



The best methods of stupefying and killing insects 

 on the field is the cyanide-bottle, prepared by placing 

 alternate layers of cyanide of potassium and blotting- 

 paper in the bottom of a wide-mouihcd 

 bottle, the mouth of which is accuiately 

 stopped with a cover, which is better for 

 the purpose than a bung. The cldoro- 

 form-bottle, which is generally made with 

 a litlle nipple, through which the fluid 

 flows slowly out, and covered with a 

 screw-top, as in the cut, is also handy. 

 Tlic chloroform should be dropped over 

 perforations in the box containing our 

 patient, these perforations having been 

 previously made by a few stubs of a pen- 

 knife. After the fluid is dropped, our thumb should 

 cover it, when the vapour will quickly eater, and 



rig. 81 



Cliloro- 



form- 



bottle. 



