Colouration in animals and plants . nown patterns were enlarged, till anuniform tint is produced, as in the Java pig, or some repeated at theexpense of others, as in the civets. But so ingrained is the tendencyto structural decoration that even where modification has reachedits highest level, as in the leaf-butterflies, some trace of the plan thatthe new pattern was founded on is recognisable, just as the rec-tangular basis can be traced in the arabesque ornaments of theAlhambra. The pointing out of this great fact has seemed to us a usefuladdition to the great law of evolution. It supplements
Colouration in animals and plants . nown patterns were enlarged, till anuniform tint is produced, as in the Java pig, or some repeated at theexpense of others, as in the civets. But so ingrained is the tendencyto structural decoration that even where modification has reachedits highest level, as in the leaf-butterflies, some trace of the plan thatthe new pattern was founded on is recognisable, just as the rec-tangular basis can be traced in the arabesque ornaments of theAlhambra. The pointing out of this great fact has seemed to us a usefuladdition to the great law of evolution. It supplements it; it gives areason why. Could he who first saw these points have read these final pages,it would have lightened the responsibility of the one upon whom thecompletion of the work has fallen. But he died when the work wasnearly finished. The investigation is of necessity incomplete, butnothing bears such misstatements as truth, and though specialistsmay demur to certain points, the fundamental arguments willprobably remain GLOSSARY. Acetabula. Lat. acetabulum, a little vessel. Sucking discs as on the tentacles of Gr. The chief Gr. kephale, head; thorax, chest. The anterior division of the body in Crustacea and Arachnida, composed of the amalgamated segments of the head and Lat. cilium, an eyelash. Microscopic filaments having the power of vibratory Gr. Koinos, common ; sarx, flesh. The common stem uniting the separate animals of compound hydrozoa, & Lat. corpusculum, a little body. Small coloured bodies, as in the endoderm of hydra, p. Modified into definite organs, or parts ; as distinct from structureless Gr. ektos, outside, derma, skin. The internal layer or skin of the Lat. effero, to carry out. A vessel which carries fluids out of the body is said to be Gr. endon, within, derma, skin. The inner layer
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Keywords: ., bo, bookcentury1800, booksubjectanimalbehavior, booksubjectplants
