Xll ADVERTISEMENT. 



obligations to W. P. Taunton, Esq, of Bristol, and of Cheani;, 

 Surry, for important information and invaluable assistance con- 

 nected with every part of the Work. 



To George Whitworth, Esq. of Acre House, Lincolnshire, 

 I am indebted for valuable information on the subject of the dif- 

 ferent varieties of Lolium pereune, which he has cultivated with 

 much care and success. 



To Frederick Schmidt, Esq. the able translator of this 

 Work into the German language, to whose extensive erudition, 

 and liberality in communicating information on every branch of 

 useful knowledge, I am greatly indebted. 



Where information has been derived from books, the authori- 

 ties, in every instance, it is believed, are given. 



For reference to descriptions of the different grasses and other 

 plants, upon which experiments have here been made, in those 

 works which contain descriptions only, or descriptions and figures 

 of them likewise, or which contain information on the culture of 

 the grasses, the following abbreviations have been employed : — 



Allioii. Pedem. Car. AUionii Flora Pedemontana, tomi 3, Au- 

 gusta Taurinorum, 1785, fol. 



B. Prodr. Bob. Brown, Prodromus Florae NovaB Hollandiae et 

 Insula Van Diemen. London, 1810, 8vo. 



Bauh. Pinax. Casp. Bauhini Pinax Theatri Botanici. Basiliee, 

 1671, 4to. 



Blakie. An Essay on the Conversion of Arable Land into Pas- 

 ture. By Francis Blakie. London, 1817. 



Cavanill. Hisp. Ant. Jos. Cavanilles Icones et Descriptiones 

 Plantai'um, quae aut sponte in Hispania crescunt, aut in Hortis 

 hospitantur, vol. 6. Matriti, 1791—1801, fol. 



Curtis, or Flo. Lo7id. Flora Londinensis, by William Curtis, 2 vols. 

 London, 1798, fol. 



De Cand. FL Fr. Flore Fran9oise. Paris, 1805—1815, 8vo. By 

 Augustus Pyramus de Candolle. 



Bngl. Bot, English Botany, by Sir J. E. Smith, P.L.S. ; the 

 Figures by James Sowerby, Esq. F.L.S. 



Flo. Ger, Flora Germanica, Autore Henrico Adolpho Schrader, 

 torn. 1, cum Tabulis vi. ^neis. Gottingse, 1806. 



