PREFACE. IX 



boundary-lines of such as are not spread over the 

 whole island. 



6. Actual specimens in confirmation of the localities, 

 heights, &c. will be most welcome, and be preserved 

 in the view of making them public evidence hereafter. 

 The name of the donor, and that of the county, should 

 invariably be written on the ticket accompanying 

 each specimen. Also, the name of the person sup- 

 posed to have gathered the specimen, if not the donor 

 himself. Neglect of this renders the specimens of 

 little value. 



7. Notices of changes in the habits or characters of 

 plants, in connection with differences of situation and 

 season. 



8. Information as to the success attending attempts 

 to cultivate plants of milder or warmer climates, with- 

 out the aid of artificial heat. Also, notices of the influ- 

 ence of elevation on the produce of fields and 

 gardens. 



9. Any corrections or amendments relating to the 

 contents of this volume, as well as criticisms and 

 suggestions for improvement, will be received with 

 pleasure by the author, if allowed to make them 

 public in case it should appear desirable to do so. 



