DESIGN IN THE ORGANIC WORLD. 



457 



nected (as already described) with the two annular cords that lie 

 beneath. And by this elaborate 

 arrangement, every part of the 

 minutely subdivided protoplas- 

 mic body which occupies the 

 minutely sub-divided cavity of 

 these disks, is brought into con- 

 tinuous relation with every other 

 part, and with the peripheral an- 

 nulus whose marginal pores con- 

 stitute the only access through 

 which nutriment can reach it 

 from without. 



I might further illustrate my 

 argument that we have here the 

 obvious indication of a pre- 

 arranged plan, by the remark- 

 able provision made, not merely 

 for the reparation of injuries, 

 but for the restoration of the 

 typical form when the disk has 

 been so much broken as to 

 destroy that form completely. 

 Even a broken-off marginal frag- 

 ment may give origin to a new 



Fig. VIII. 



Portion of Sarcodic body of Com- 

 plex Orbitolite : — a a', b b' , upper 

 and lower annular cords of two con- 

 centric zones ; c c, upper layer of 

 superficial sub-segments ; d d, the 

 lower layer ; e e and e' e\ interme- 

 diate columnar sub-segments of the 

 two zones, giving off oblique stolon- 

 processes. 



disk ; its sarcodic body extend- 

 ing itself all round it, so as to form a continuous band ; and this 

 forming a complete annulus of chamberlets, round which new 

 annuli are successively added. 



In the Life-history of the perfected type, then, we can clearly 

 trace a sequence which runs exactly parallel to what we have 

 reason to regard as its Evolutionary history, and, in addition, a 

 provision for the maintenance of the/^//(?(;"/(!'^mode! ; the reparative 

 process being carried on — alike in the " simple," the "duplex," 

 and the " complex " types — upon the plan characteristic of 

 each. 



But my special reason for dwelling upon this "instance" (as 

 Bacon would call it) is, that the influence of Natural Selection 



