TABLK IX. Schedule of Most Important Animal Parts, with the Tribes in which they Probably 

 First Appeared, in the Column on the Right. 



TABLE X. Organ Systems of the Human Body. 



I. Indicates Derivation from Skin Sensory Layer. 



II. " " " Skin Fibrous " 



III. " " " Intestinal Fibrous Layer. 



IV. " " " Intestinal Glandular " 



