ADDITIONS AND CORRECTIONS. 



XI 



Fifth 

 Edition. 



Sixth 

 Edition. 



326 



vol. IL 



28 



377 

 402 

 440 

 463 



81 

 107 

 148 

 172 



505 



218 



516 



232 



518 

 520 

 521 

 541 

 547 



236 

 237 

 240 

 262 

 362 



552 



275 



568 



393 



572- 



397 



Chief Additions and Corrections. 



On the causes of sterility c^ hybrids, added to and 

 corrected. 



Pyrgoma found in the chalk. 



Extinct forms serving to connect existing groups. 



On earth adhering to the feet of migratory birds. 



On the wide geographical range of a species of 

 Galaxias, a fresh-water fish. 



Discussion on analogical resemblances, enlarged 

 and modified. 



Homological structure of the feet of certain mar- 

 supial animals. 



On serial homologies, corrected. 



Mr. B. Ray Lankester on morphology. 



On the asexual reproduction of Chironomus. 



On the origin of rudimentary parts, corrected. 



Recapitulation on the sterility of hybrids, cor- 

 rected. 



Recapitulation on the absence of fossils beneath 

 the Cambrian system, corrected. 



Natural selection not the exclusive agency in the 

 modification of species, as always maintained 

 in this work. 



The belief in the separate creation of species, gen- 

 erally held by naturalists, until a recent period. 



