814 



TAXIDERMY AND ZOOLOGICAL COLLECTING. 



concentrated sulphuric acid and the other is intended for the 

 reception of any overflow of the hydrated sulphuric acid which 

 may occur. The object of passing the air through sulphuric 

 acid is to rob it, so far as possible, of its moisture. It is then 

 conveyed into a flask, which is heated upon a sand-bath, and 

 thence by a piece of flexible tubing to a tip mounted on a joint 



FIG. 82. Apparatus for Inflating Larvae. B, Foot-bellows ; K, rubber tube ; C, flask ; D, an- 

 hydrous sulphuric acid ; E, overflow flask ; F, rubber tube from flask ; G, standard with cock to 

 regulate flow of air ; H, glass tube with larva upon it ; I, copper drying-plate ; J, spirit-lamp. 



allowing vertical and horizontal motion and secured by a stand- 

 ard to the working-table. The flow of air through the tip is 

 regulated by a cock. Upon the tip is fastened a small rubber 

 tube, into the free extremity of which is inserted a fine-pointed 

 glass tube. This is provided with an armature consisting of 

 two steel springs fastened upon opposite sides, and their ends 

 bent at right angles in such a way as to hold the larval skin 

 firmly to the extremity of the tube. The skin having been ad- 

 justed upon the fine point of the tube, the bellows is put into 



