No. 2.] PORTABLE ANT NESTS. 85 



When the nests are to be carried on a journey the roofs 

 are securely fastened down by sewing narrow strips of cheese 

 cloth around the nest in such a way as to prevent the slipping 

 of the roof-pane. The fastenings must not exclude fresh air. 

 Having fastened the roof-panes each in place, the nests are 

 put upon the appropriate shelves in the case, where they may 

 be further secured by bits of wadding above the roof-panes and 

 at the ends of the shelves. 



The weight of my case, with its six enclosed nests packed 

 for travel, is less than fifteen pounds. The strong local attach- 

 ments of the ants are undisturbed by their so journeying, and 

 at the end of the journey the study of their life processes may 

 be speedily resumed. 







MARINE BIOLOGICAL LABORATORY, 



WOODS HOLL, September, 1900. 



