Bull. U, S. F. C. 1899. (To face page 224.) 
Plate 26. 
23. Shows growth of single specimen collected as a larva and set 
June 28. a, July 23, 2 mm.; b, August 13, 4 mm.; c, August 18, 
Tl mm.; d, September 5,5mm.; e, September 26,12 mm.:/. 
October 12, 21 mm.; </, November 5, 30 mm. Natural size. See 
page 218. 
24. a, Rate of growth and of regeneration: I, August 15; II, Septem- 
ber 5; III, September 26; IV. October 12; b, single arm alive, 
from August 15 to September 26. Natural size. See page 
219. 
25. Star regenerating five arms from ventral side, Natural size. See 
page 222. 
26. Showing manner of cutting the stars in the experiment described 
on page 222. 
27. Showing manner of cutting the stars in the experiment described 
on page 223. 
28. Showing the regeneration of the arms in the experiment described 
on page 223; a portion of the disk regenerating three arms. Nat- 
ural size. 
29. Showing manner of cutting the stars in the experiment, described 
on page 223. Natural size. 
30. The result of one of the regeneration experiments described on 
page 223; one or two arms regenerating from a part of the disk. 
Natural size. 
