( 387 ) 



TABLE XLII. 



Systematic Survey of those Primitive Organs which must probably be 

 regarded as homologous in "Worms, Articulated Animals, Soft-bodied 

 Animals, and Vertebrates.'" 



Worms 

 ( Vermes). 



Articulated 



Animals 

 (^Ai'thro^oda). 



Soft-bodied 

 Animals 

 (^Mollusca). 



Vertebrates 

 {Vertebrata). 



IV. Products of the Differentiation of the Intestinal-glandular Layer. 



12. Intestinal epithe 

 lium 



12. Intestinal epithe- 

 lium 



12. Intestinal epithe- 

 lium 



12. Intestinal epitbe« 

 lium 



