Lect. VI.] DEVELOPMENT OF THE MOLE. 149 



force working within, produces curious structures, of 

 various kinds, that are of no use to him, and that, 

 indeed, are not left there to be of any use ; these 

 scaffoldings re^^resent such buildings as were useful in 

 the olden time. Here, if a man leans on teleology, 

 alone, it will break, and pierce his hand ; if the develop- 

 ment of the Mole does not teach Darwinism, there is 

 no use in observation, or in making deductions from 

 observed facts ; the morphologist's occupation is gone. 

 The early development of the germ and embryo of the 

 Mole has been largely worked out of late by competent 

 embryologists, for it is a type easily obtained. 



My task begins where theirs ends, and I follow the 

 growth of the frame when the main work of differentia- 

 tion is over ; — when there has been formed cartilage for 

 things of cartilage, muscle for things of muscle, and 

 Ijone for things of bone. Ten stages have been followed 

 in the head, point by point, part by part. 



"When we build, we prepare our work without, and 

 make it fit for ourselves in the field, and afterwards 

 l)uild our house. For, having no true creative power, we 

 have no option ; we allocate, l)ut cannot differentiate ; 

 our creations are mere toys, after all, for the great earth- 

 mother has given us the prepared materials to play 

 with. She, however, works in a fasliion that infinitely 

 transcends ours, and grows all her varied materials out 

 of an apparently simple stuff, a pellet of which, no 

 larger than a mote in a sunbeam, is enough for her 



