CONTENTS. 



PAET I. 

 GENERAL REMARKS. 



CHAPTER 

 I 



In what Manner and at what Epochs Cultivation began 

 IN Different Countries 

 II. Methods for discovering or proving the Origin of Species 



t 



J 



8 



PAET II. 



ON THE STUDY OF SPECIES, CONSIDERED AS TO THEIR 

 ORIGIN, THEIR EARLY CULTIVATION, AND THE 

 PRINCIPAL FACTS OF THEIR DIFFUSION. 



I. Plants cultivated for their Subterranean Parts, such 



AS Roots, Tubercles, or Bulbs 

 II. Plants cultivated for their Stems or Li':aves... 



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



which envelop them 



IV. Plants cultivated for their Fruits ... 

 V. Plants cultivated for their Seeds ... ... 



29 

 83 



IGl 

 168 

 313 



PART III. 



SUMMARY AND CONCLUSION. 



I. General Table of Species, with their Origin and the 



Epoch of their Earliest Cultivation ... ... 436 



II. General Observations and Conclusions ,., ... 447 



Index 



463 



