FOURTH WEEK] 



January 



29 



Prometheus is " bound/' indeed, and merely swings the 

 faster, up and down, from side to side. 



It is interesting to note that when two Prometheus 

 cocoons, fastened upon their twigs, were suspended in a 

 large cageful of native birds, it took a healthy chickadee 

 just three days of hard pounding and unravelling to force 

 a way through the silken envelopes to the chrysalids 



within. Such long continued and persistent labour for 

 so comparatively small a morsel of food would not be 

 profitable or even possible out-of-doors in winter. The bird 

 would starve to death while forcing its way through the 

 protecting silk. 



These are only four of the many hundreds of cocoons, 

 from the silken shrouds on the topmost branches to the 

 jugnecked chrysalis of a sphinx moth offering us the 



