312 Darwin, and after Darwin. 



FIG. 107. Wild Boar contrasted with a modern Domesticated Pig. 

 Drawn from life {Zoological Gardens, and prize specimen). 



The exigencies of space have prevented, in some of 

 the groups, strict adherence to a uniform scale with 

 the result that contrasts between different breeds in 

 respect of size are not adequately rendered. This 

 remark applies especially to the dogs ; for although 

 the artist has endeavoured to draw them in perspective, 

 unless the distance between those in the foreground 

 and those in the background is understood to be 

 more considerable than it appears, an inadequate idea 

 is given of the relative differences of size. The most 

 instructive of the groups, I think, is that of the 

 Canaries ; because the many and great changes in 



