xii CONTENTS 



CHAPTER IV 



PAGE 



COMMON MODES OF INHERITANCE ..... IO6 



i. Though Prediction in Individual Cases is insecure, there are 

 some Common Modes of Inheritance. 2 . Certain Necessary Saving 

 Clauses. 3. Blended Inheritance. 4. Exclusive Inheritance 

 (Unilateral, Absolutely Prepotent, or Preponderant). 5. Parti- 

 culate Inheritance. 6. Alternative Inheritance. 7. Summary 

 of Possibilities. 



CHAPTER V 

 REVERSION AND ALLIED PHENOMENA . . ; . Iig 



i. What is meant by Reversion. 2. Suggested Definitions. 

 3. Theoretical Implications. 4. Phenomena sometimes con- 

 fused with Reversion. 5. " Skipping a Generation." 6. Men- 

 delian Interpretation of Reversion. 7. Reversion in Crosses. 

 8. Reversion of Retrogressive Varieties. 9. Interpretations in 

 Terms of Reversion. 10. Further Examples of Reversion. 



CHAPTER VI 

 /TELEGONY AND OTHER DISPUTED QUESTIONS . . .143 



i. What is meant by Telegony. ' 2. The Classic Case of 

 Lcrd Morton's Mare. 3. Representative Alleged Cases of Tele- 

 gony. 4. Ewart's Penycuik Experiments. - 5. Suggestions 

 which explain away Telegony. 6. Suggestions as to how Telegonic 

 Influence might be effected. 7. A Statistical Suggestion. 8. 



'The Widespread Belief in the Occurrence of Telegony. 9. An 

 Instructive Family History. 10. A Note on Xenia. u. 



Maternal Impressions. 



CHAPTER VII 

 THE TRANSMISSION OF ACQUIRED CHARACTERS , . 164 



i. Importance of the Question. 2. Historical Note. 3. 

 Definition of the Problem. 4. Many Misunderstandings as to 

 the Question at Issue. 5. Various Degrees in which Parental 

 Modifications might affect the Offspring. 6. Widespread Opinion 

 in favour of Affirmative Answer. 7. General Argument against 

 the Transmissibility of Modifications, | 8. General Argument 



