CONTENTS. 



PAET I. 

 GENERAL EEMAKKS. 



CBAPTEtt TAGR 



I. In what Mankee and at what Epochs Cultivation began 



IN DiFFEKENT COUNTBIES ... ... ... ... 1 



II. Methods fob discovering ob proving the Origin of Species 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 foe theib Subterranean Pabts, such 



AS Roots, Tcbbeoles, or Bulbs ... ... ... 29 



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



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



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



IV. Plants cultivated foe theib Feuits ... ... ... 168 



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



PAET III. 



SUMMARY AND CONCLUSION. 



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



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



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



Index ... ... ••■ ••• ••■ ••• ••■ 463 



