EXTKACTS FBOM PltOCEEDINGS. 



Ixiii 



stages a form has passed, cc V would intimate a plant obtained 

 from seed, which came itself from an anterior half-breed ; x\j Z 

 a plant obtained by a sport, from a seedling which was derived 

 from a half-breed. Inversely, a sport being sown, we might ob- 

 tain a new form, which would be indicated by Tisj ; or, two 

 sports being crossed, we might have a new form, the index of 

 which would be Zx. 



" These and other possible combinations would be rare for want 

 of accurate observations. In the greater number of cases the 

 names would be preceded by a single sign ; but there would be 

 special memoirs and corrected catalogues, such as we hope for 

 from the Scientific Committee of the Horticultural Society, in 

 which one would see in this abridged form the history of the suc- 

 cessive states of certain species. This would assuredly have con- 

 siderable interest for science and horticulture. 



" Conclusions. 



" After having recalled what was done by the Botanical Congress 

 of Paris on the subject of the nomenclature of cultivated species, 

 I have taken the liberty of calling the attention of the Committee 

 to two special points : — 



" 1. The expediency of persuading horticulturists to confine the 

 use of double names for hybrids or half-breeds to the rare cases in 

 which no doubt whatever can be raised as to the plant which has 

 furnished the pollen. 



" 2. The utility of introducing two new typographical signs, 

 which might be placed before the names of seedlings or sports, as 

 we already place one before the names of hybrids or half-breeds. 



" In submitting these ideas to the Scientific Committee, I beg 

 them to receive the assurance of my respect, and all my good 

 wishes for the success of their labours. — Alph. DeCandolle." 



June 2, 1868. 

 T. Thomson, M.D., F.E.S., in the Chair. 



The Minutes of the last Meeting were read and confirmed. 



A letter from Mr. Bull was read respecting the nomenclature 

 of the new varieties of Coleus. 



A letter from Mr. G-. Pollock was read in reply to a communi 

 cation from the Secretary asking for further information respecting 



