CREATION BY LAW. 291 



ture his frame is homologically, that is ideally, the 

 same as the frame of the brutes — organ answering 

 to organ, and bone to bone. 



" Adherence to Type " are words expressive of 

 an Idea, of a Purpose, which we see fulfilled in Or- 

 ganic Forms. But this purpose must have sought 

 its own accomplishment by the use of means, and 

 the question of Science always is, what were these ? 

 Love of beauty is equally a Purpose which we 

 see fulfilled in Nature, but in the case of the 

 Humming Birds this has been accomplished by 

 giving to their plumes the structure of " Thin 

 Plates," — a structure which decomposes light and 

 flings back its prismatic colours to the eye. Fit- 

 ness and special adaptation is another of the 

 purposes of Creation, but this also is attained 

 through the careful arrangement, and pliability to 

 use, of physical laws. In like manner, "Adher- 

 ence to Type " is the expression of a fact, or the 

 statement of a Purpose, which, like all the other 

 purposes fulfilled in Nature, invites to an investiga- 

 tion of the instrumentality employed, We see the 

 Purpose, but we do not see the Method. We see 



