( xiv ) 



TABLE OF PRINCIPAL ADDITIONS AND CORRECTIONS. 

 {Continued.) 



First 



Second 





Edition. 



Edition. 





Vol. II. 



Vol. I. 





Page 



Paee 





23 



467 



Additional facts with respect to the inherited effects 



of circumcision. 



23 



467 



Dr. Brown-Sequard on the inherited effects of opera- 

 tions on the Guinea-pig. 



21 



469 



Other cases of inherited mutilations. 



43 



Voi. II. 



17 



An additional case of reversion due to a cross. 



72 



48 



Inheritance as limited by sex.- 



105 



83 



Two varieties of maize which cannot be crossed. 



120 



99 



Some additional facts on the advantages of cross- 

 breeding in animals. 



123 



103 



Discussion on the effects of close interbreeding in 

 the case of man. 



135 

 to 

 111 



117 1 

 to ) 

 122 J 



Additional cases of plants sterile with pollen from 



the same plant. 



119 



131 



Mr. Sclater on the infertility of animals under con- 

 finement. 



152 



134 



The Aperea a distinct species from the Guinea-pig. 



230 



215 



Prof. Jager on hawks killing light-coloured pigeons. 



273 



262 



Prof. TYeisinann on the effects of isolation in the 

 development of species. 



281 



271 



The direct action of the conditions of life in causing 

 variation. 



317 



309 



Mr. Romanes on rudimentary parts. 



324 



316 ) 





to 



to > 



Some additional cases of correlated variability. 



328 



327 ) 





339 



333 



On Geoffroy St. Hilaire's law of " soi pour soi." 



357 



349 ) 



The chapter on Pangenesis has been largely altered 



to 



to 



and re-modelled; but the essential principles re- 



404 



399 J 



main the same. 



