INTRODUCTION OF SPECIES AND VARIETIES 9 



So far as regards the indigenous grasses, it does not appear that much improvement 

 remains to be further effected by the introduction of species, although important results 

 may be anticipated from extending the field-culture of many of those which may be said to 

 have hitherto only formed subjects of experiment. As, however, the cultivation of original 

 species constitutes only the first steps in the improvement of plants, it is therefore to the 

 selection of permanent varieties of these, distinguished from their origins by the posses- 

 sion of superior qualities, as greater growth, earlier maturity, adaptation to particular pur- 

 poses, &c., that we are ultimately to look for the most beneficial results. It must be kept 

 in mind, however, that, although much remains to be done in this department, yet enougli 

 has been accomplished, to point out the derivable advantages, and thereby stimulate culti- 

 vators to further exertions. 



