The fourth volume will contain, in addition to each figure, a short account of who first raised it, &c., and at the end of the volume (which the author trusts will be completed in much less time than the foregoing ones) all the seeds that can possibly be procured will be represented, both of the natural size and magnified, to render the work as complete as the progressive increase of the vegetable kingdom will possibly admit of. SYSTEMATICAL ARRANGEMENT OF THE LXXII ERICAS, OR HEATHS, CONTAINED IN VOL. III. Taken from the shape of the tips, and the number of leaves which surround the stem in one whorl. ANTHERÆ ARISTATÆ. TIPS BEARDED. _Foliis ternis._ _Leaves by threes._ E. hirta, _viridiflora_ Hairy, _green-flowered_ incurva Incurved-leaf lachnæa Lachnæa-like β _purpurea_ β _purple_ Nivenia, _longiflora_ Nivens, _long-flowered_ lanuginosa Flannelly lævis Smooth _Foliis quaternis._ _Leaves by fours._ Blandfordia Blandford β mammosa, _minor_ Nipple, _small_ Patersonia, _major_ Paterson, _large_ β _coccinea_ β _scarlet_ _Foliis senis._ _Leaves by sixes._ racemifera Clustered ANTHERÆ CRISTATÆ. TIPS CRESTED. _Foliis ternis._ _Leaves by threes._ Andromedæflora Andromeda-flowered calycina, _major_ Calycined, _large_ δ _minor_ δ _small_ elegans Elegant laxa Loose nitida Shining vernix Varnished emarginata Emarginated _Foliis quaternis._ _Leaves by fours._ australis Southern squamose Scaly ANTHERÆ BICORNUTÆ. TIPS TWO-HORNED. _Foliis ternis._ _Leaves by threes._ fimbriata Fringed globosa Globular Irbyana Irby planifolia Flat-leaved Savileia Savile