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the wire with extreme care, until the hinder extremity 

 has passed half-way over the loop, and the shellac has 

 smeared the interior sufficiently to hold the caterpillar 

 in place when dry ; the extremities of the parted wires 

 should reach nearly to the head. Nothing remains 

 hut to curve the doubled end of the wire tightly around 

 a pin with a pair of strong forceps and to place the 

 specimen, properly labelled, in a place where it can dry 

 thoroughly for several days before removal to the cabi- 

 net. 



For more careful preservation and readier handling, 

 each specimen may be placed in a glass tube, like the 

 test tube of the chemist. The wire is then first bent in 

 the middle and the bent end inserted in a hole bored in 

 the smaller end of a cork of suitable size, so as nearly 

 to pass through it ; the loops are then formed as above ; 

 both ends of the cork are varnished, and a label pasted 

 around the portion of the cork which enters the tube, 

 thus guarding both specimen and label from dust, and 

 the latter from loss or misplacement. After two or 

 three days the cork with the caterpillar attached is 

 placed in its corresponding tube, and the tube may be 

 freely handled. 



Modifications of this system will occur to every one. 

 Dr. Gemminger uses a syringe for the extraction of the 

 contents as well as for the inflation of the emptied skin. 

 For an oven, the Vienna entomologists employ an 

 ordinary gas chimney, open at both ends and inserted 

 in a sand bath, which prevents, perhaps, the danger of 

 too great heat. 



In rearing caterpillars for the after stages, season- 

 able care must always be taken to provide a suitable 

 place in the breeding cage for the chrysalis to suspend 

 itself : a twig for such as prefer such situations ; a bit 

 of shingle near the top of the cage for those that sus- 

 pend themselves by the tail, or fasten themselves pref- 

 erably to flat surfaces ; leaves for those that construct 

 some sort of a cocoon. The search for chrysalids in 

 the open air is not likely to meet with great success 



