8 4 
LIFE AND HER CHILDREN. 
parent tubes moving in the groove under each of his 
five rays (A, Fig. 36, and 1 1, Fig. 37). The whole of 
the under part of his body will be waving like a field 
of corn, as each tube-foot in its turn is stretched out, 
bent forward, and fastened to the glass. Then after 
drawing the body a little on, it will loosen again and 
collapse into a mere knob, while another will lengthen 
out and take a hold. In this way, as tube after tube 
draws it forwards, the body of the star-fish will be 
Fig. 36. 
A, The common five-fingered Star-fish.* The dark round spot 
between the lower rays is the water-hole. B, The Brittle Star-fish, t 
carried easily along the bottom or up the sides of the 
glass like a canopy resting upon the heads of more 
than two thousand bearers. 
And now if you look in the centre of the under 
part of his body you will see a small opening with 
the skin puckered up round it. This is his mouth 
(m, Fig. 37), and if ycu place a small mussel or lim- 
* Uraster rubens. f Ophiocoma bellis. 
