CONTENTS. 



PAET I. 

 GENERAL REMARKS. 



CHAPTER PAGE 



I. IN WHAT MANNER AND AT WHAT EPOCHS CULTIVATION BEGAN 



IN DIFFERENT COUNTRIES ... ... ... ... 1 



II. METHODS FOR DISCOVERING OR PROVING THE ORIGIN OF SPECIES 8 



PART II. 



ON THE STUDY OF SPECIES, CONSIDERED AS TO THEIR 

 ORIGIN, THEIR EARLY CULTIA^ATION, 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 LEAVES... ... 83 



HI. PLANTS CULTIVATED FOR THEIR FLOWERS, OR^OR THE ORGANS 



WHICH ENVELOP THEM ... ... ... ... 161 



IV. PLANTS CULTIVATED FOR THEIR FRUITS ... ... ,. 168 



V. PLANTS CULTIVATED FOR THEIR SEEDS ... ... ... 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 ... ... ... " * fi 3 



