12 SPECIES NOT 



beautiful nautilus, which skims along the surface 

 of our own seas, and the delicate Cleodora, one 

 of the most lovely and fragile monuments of the 

 past. The class Annulosa is represented by some 

 remarkable forms. Star-fishes like those we can 

 pick up on our own coast, only differing in some 

 real or imaginary structure; the curious Crinoid 

 still represented in our fauna, and those wood- 

 louse-like crustaceans, the Trilobites, of which 

 Burrneister and the Kay Society have given us 

 i in mortal representations. 



It is clear then that Mr. Darwin's world could 

 not have commenced here, for we have a host 

 of once-living things in these Cambrian and Silu- 

 rian rocks, representing plants, and four out of 

 the five great divisions of the animal kingdom. 



Well, to get over this difficulty, Mr. Darwin 

 creates in his imagination another world of an 

 indefinite length, but at least as long before the 

 silurian as the time which has passed away since. 

 1 must beg the reader's particular attention to 

 this imaginary unknown geological formation ; but 

 for the present I will leave it, and say a word 

 or two about the immense record of which, thanks 

 to the researches of Sedgwick, Murchison, Lyall. 

 and others, we do know a great deal. And what 

 does it tell us of the transmutation of species'; 

 absolutely nothing! 



Through this immensity of space animal life 

 has neither diverged in form to any amount, or 

 has had differentiated by the "law" of variation 

 any additional organs. // has not become tram*- 



