CONTENTS. 



PAET I. 



GENEEAL KEMAKKS. 



CHAPTEB TAGR 



I. In what Manner and at what Epochs CtiLTivATioN began 



IN DiFFEKENT COTJNTEIES ... ... ... ... 1 



II. Methods fob discovering or proviso the Okisin of Species 8 



PAET II. 



ON THE STUDY OP SPECIES, CONSIDEKED AS TO THEIE 

 ORIGI^f, THEIB BAKLY CULTIVATION, AND THE 

 PKINCIPAL FACTS OF THEIR DIFFUSION. 



I. Plants cultivated fob their Subterranean Parts, such 



AS Roots, Tubeeoles, or Bulbs ... ... ... 29 



II. Plants cultivated for their Stems ob Leaves... ... 83 



III. Plants cultivated fob theib Flowees, oe foe the Organs 



WHICH envelop them ... ... ... ... 161 



IV. Plants cultivated for theib Fedits ... ... ... 168 



V. Plants cultivated foe their Seeds ... ... . ... 313 



PART III. 



SUMMARY AND CONCLUSION. 



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



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



II. General Obsekvations and Conclusions ... ... 447 



Index ... ... ••• ••• ••• ••• ••• 163 



