M. De CandoUe on the Species and Varieties of Brassica. 87 



beyond this, impairs the malleability; and when melted in 

 1 70" of Wedgwood, it either crystallizes in a seal}' sort of la- 

 mina, or in cubes inserted in each other, not in the least duc- 

 tile when cold, or malleable whilst hot. 

 I am yours, &c. 



D. MUSIIF.T. 



XXII. Memoir on the different Species, Races, and Varieties of 

 the Genus Brassica (Cabbage), and of the Gena-a allied to 

 it, 'isohich are cidtivated in Europe*. By M. Augustin 

 Pyramus De Candolle, Professor of Botany in the Aca- 

 demy of Geneva, Sfc. S,'c.\. 



TT has been observed, that most of the culinaiy and oecotio^ 

 •■■ mical plants now cultivated in Euroj^e, came, originally, 

 from some other part of the globe. The Cabbages may be 

 considered as an exception to this remark, as they appear to 

 have been known from the earliest period of civilization, and 

 from being altered by the influence of various climates and 

 modes of cultivation, as well as increased by crosses obtained 

 from the intermixture of races and varieties, have become so 

 numerous throughout Europe, as to be deemed unworthy the 

 attention of the learned : insomuch, that botanists and culti- 

 vators liave alike adopted the various names handed down by 

 tradition, and which have been indiscriminately applied m 

 passing from one province to another, to plants of very diffe- 

 rent natures. This will sufficiently account for the difficulty 

 of classing and distinguishing the different species, races, and 

 varieties of cultivated Cabbages : plants undeservedly neg- 

 lected, and which I have been led to consider with attention, 

 from the desire of throwing some light on botanical synonyms, 

 as well as from the hope of inducing naturalists to fix their at- 

 tention on cultivated plants in general. 



M. Duchesne, the author of the Monograph on the Straw- 

 berries, has already published a Memoir j on cultivated Cab- 



* From the Transactions of the Horticultural Society of Loudon, Vol. V. 

 Parti, for 1822. 



f In order to afford the British Horticulturist the full advantajje of tiie 

 information contained in this Memoir, an attem]5t has been made to add 

 the English names of such of the vegetables described \>y the learned Pro- 

 fessor, as are known and cultivated in the English gartJeus. 'I'hc reader 

 will find in the second volume of M.De ('andolle's licp^ni Vcs-clalnlia Sj/stcma 

 Xaturalc, under the diflferent genera, the various authors who have men- 

 tioned or described the sj)ecies and varieties now noticed. — See. 



X Article Ciioc. Lamarck Erui/ilopcd'u- Hotaui(]uc,\o\.\.\i.TA''2,et scqq. 



bajies. 



