298 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



soaking in the latter, the specimen may be picked out on 

 the point of a needle and placed in the middle of a melted 

 drop of glycerine jelly on a glass slide. The cover glass 

 (which may be warmed) should be gently pressed down on 

 to the specimen so as to bring the setse into one plane. 

 Sections of post-larval stages should be thin (not more 

 than 4 or 5/x) if they are to be of much use. 



