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ENTOMOLOGICAL NEWS. 



[Feb., '06 



lected in a tube containing alcohol, which is attached to the 

 apparatus under discussion, and on the part of the naturalist 

 there is no further trouble than to separate them and study 

 them. The apparatus consists of a large funnel which slides 

 into a glass tube containing alchohol and this funnel is sur- 

 surrounded by water heated to 6o° to ioo°. On top of the 

 funnel there is placed a sort of square tray of metallic net- 

 work (a sieve) upon which is placed the material to be ex- 

 amined, and this material should naturally be sufficiently 

 humid to restrain the living insects from escaping. Whether 



Fig. I .—Apparatus for direct heating: A, exterior receptacle containing water; />'. 

 interior funnel; C, vessel having the bottom of metallic net work ; D, substance for ex- 

 amination ; E, funnel for introducing the water ; F, small glass tube containing alcohol, 

 where the insects are collected, this being connected to the apex of the funnel by a short 

 tube (a 1 of India rubber ; 6", feet supporting the apparatus ; L, Jamp for heating ; Af, India 

 rubber tube for carrying off the gas ; N, faucet for discharge. 



the material in the tray, passing gradually (although rapidly 

 enough) through and losing some of its moisture causes the 

 insects to fall to the bottom, or whether these are attracted by 

 the heat beneath, it is certain that they all try to reach the 

 metallic net and there they pass through, falling into the 

 metallic funnel. 



