CONTENTS. 



PAET I. 

 GENERAL REMARKS. 



CPAPTEB PAGE 



I. In what Manxer and at what Epochs Cultivation began 



IN Different Cointries ... ... ... ... 1 



II. Methods for discovering or proving the Origin of Species 8 



PAET II. 



OX THE STUDY OF SPECIES, CONSIDERED AS TO THEIR 

 ORIGIN, THEIti EARLY CULTIVATION, AND THE 

 PRINCIPAL FACTS OF THEIR DIFFUSION. 



I. Plants cultivated for their Subterranean Parts, such 



AS Roots, Tubercles, or Bulbs ... ' ... ... 29 



II. Plants cultivated for their Stems or Le:aves... ... 83 



III. Plants cultivated for their Flowers, or for the Organs 



which envelop them ... ... ... ... 161 



IV. Plants cultivated for their Fruits ... ... ... 168 



V. Plants cultivated for their Seeds ... .., ... 313 



PAET III. 



SUMMARY AND CONCLUSION. 



L General Table op Species, with their Origin and the 



Epoch op their Earliest Cultivation ... ... 436 



XL General Observations and Conclusions ... ... 447 



Index ... ... ... ... .. 463 



