On the Colour and Smell of Plants. 



17 



pensably requisite, but these have already been partially car- 

 ried on, and their results published in two essays, by the same 

 able naturalists, viz. " Investigations regarding the Distribu- 

 tion of Colours and Odours in the families of the Rubiacece ; by 

 G. Schubler and F. X. Af tiller, (Inaugural Dissertation, Tu- 

 bingen , 1831, 8vo) ;" and, " Investigations on the Distribution 

 of Colours and Odours in the families of the Asperifolice, Pri- 

 mulacece, Convolvulacece, Campanulacece, Rosacece, Ranuncu- 

 lacece, Papaveracece, and Nymphceacece ; ly G. Schubler and 

 Fr. Fell. (Inaugural Dissertation, Tubingen, 1831, 8vo.) w 



We shall here speak particularly of the family of the Rubia- 

 ceoe, which includes plants containing extremely powerful sub- 

 stances, that are employed for medicinal purposes, for nourish- 

 ment, and for technical uses ; and also species that are remark- 

 able for their agreeable or disagreeable odours. 



Under the great family of the Rubiaceoe are included the 

 following sub-families, viz. the Cinchonaceae ; the Gardenia- 

 ceae, Rich. ; the Hedyotidcae, Cham, and Schl.; the Isertiea?, A. 

 Rich. ; the Hamelieae, A. Rich. ; the Cordiereae, Rich. ; the 

 Guettardaceac, Kunth ; the Paederiae, Dec,; the Coffeaceae, 

 Dec. ; the Spermacocese, Cham. ; the Anthospermeae, Cham. ; 

 the Stellatae, Ray and Dec. ; and the Opercularieae, A. Rich. 



All these subdivisions contain 708 species of plants, which 

 may be divided, as to colours, in the following manner ; and, 

 for the sake of further comparison, are added the results de- 

 duced from the mean of several other families, according to the 

 principles already communicated. 



VOL. XXII. NO. XLIII. JANUABY 1837. 



