76 



ARTHROPODA 



FIG. 72. Photograph of Polyphemus. Oue half 

 natural size. 



out or seeds planted. The eggs of the silkworm moth 



may be procured of T. Keleher, 662 Massachusetts Ave. 



N. E., Washington, 

 D.C.; Dr. W. H. 

 Hill, Peoria, 111.; 

 and Mrs. Carrie 

 Williams, 1245 Lo- 

 gan Ave., San Di- 

 ego, Cal. If kept 

 cool they will not 

 hatch until late in 

 summer, but they 



may be made to hatch during April or May by placing 



them in a warm room a week. As soon as the minute 



hairy black larvae 



break from the eggs 



they should be given 



very small tender 



leaves or larger 



leaves cut into small 



pieces. If fed sev- 

 eral times daily with 



mulberry or osage 



orange leaves for a 



month, the larva will 



spin a cocoon with 



the secretion of the 



silk glands opening 



just beneath the 



mouth. The spin- 

 ning occupies three days or more, and soon after its com- 



FIG. 73. Photograph of cocoons of promethea 

 moth. 



