78 



ETON NATURE-STUDY 



of an inch over the edge ; make a saw cut so that the glass will slide 

 in and screw a wooden button on to the end of the box which, when 

 turned, will prevent the glass from moving, 



Watch to see if you can catch one of your blind worms casting his 

 skin : write an illustrated description of this process, and of the 

 method of feeding. Possibly young ones will be produced. The egg 

 coverings are quite membranous, and the young appear a few minutes 

 after the eggs have been laid. An interesting series of observations 

 may be made upon the movements of the young ones as they free 

 themselves from their coverings (see figure 88), and absorb the 

 yolk sac of the egg. 



From a photograph by Wilfred Mark Webb. 

 FIGURE 88. A Blind Worm. 



