575 NATURAL CLASSES, SECR, XX: 7

the fexual organs, as criterions of the orders and clafles, muft lay the foundation; but that it muft require a great architeét to ereét the fuperftruëéture. And my principal defign in adjoining this imperfe& fketch at the end of this work was to warn thof botanifts, who have began to interweave fome of the Linnæan claffes deduced from fitu- ation or proportion of the fexual organs into thofe diftinguifhed fim- ply by number, that they fo far contribute to deteriority the great {yftem, which they mean to amend.—At the fame time I much ap- plaud, and beg leave to recommend to the attention of the public, the fuperb piétorefque botanical coloured plates now publifhing by Dr. FHoRNTON, which I fuppofe have no equal.

ADDITIOTÂE