io8 



THE FROG 



CHAr. 



Ki(i. 27. — 'i'lit; circiil.itiuii in lli<j frog's wuh, tirulcr a liigh power. 

 I, wall ofcnpillarics ; B, Ussiit; of llic wlIj in wliich Uie capillniics lie ; (", cpiilcnn 

 celK ; ./', ihcir nuclei ; Ji, pigment cells ; K, reel corpuscles ; (7, //, reil corpuscles 

 being squcezctl through a narrow capillary; A', capillary .seen through the 

 epiderm ; /, colourless corpuscles. (Fruiu Hu.xley's /'/ij'sio/iXJ'-) 



