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A HISTORY OF SUSSEX EUPHORBIACE^ CvPERACEffi Euphorbia platyphyllos L. Scirpus acicularis L. PoLYGONACE^ Polygonum Rail Bab. Gram.ne^ Poa compressa L. Amentifer^ P^3j^^^ ^^l^ig^^ ^^ Q^ll Salix laurina Forst. p. sylvatica Fill. Naiadaceje Potamogeton rufescens Schrad. Filices P. rutilus Wolf. Aspkmum marinum L. VII. The Medway This comparatively small district is bounded by Surrey and Kent on the north, and on the east by the Rother. Its southern boundary is formed by the Cuckmere and the Ouse. We leave the Ouse district at Handcross and bear westward across the Forest to Colgate and Stone Lodge. We then bear north-east to Roughey Street and east of Rusper to the Surrey boundary. This district is drained by the Medway, which originating in Sussex from a number of little streams becomes the boundary between Kent and Sussex, and runs into the German Ocean ; and by the Mole, an independent river, which has its principal sources on the north side of the Forest Ridge, and which passing into Surrey joins the Thames at Hampton Court. This district differs from the rest in having no seaboard. It includes Waterdown Forest and a great part of the neighbourhood of Tunbridge Wells, and has an argillaceous soil more or less mixed with calcareous grit and sandstone rocks in parallel ridges. Damp hollows, rocky ravines and occasionally patches of bog are frequent. Several lists of its plants are extant. Observers however have not always been careful to separate Sussex species from those occurring beyond the Kentish border. Its rarer plants are these : — Fumariace^ Umbellifer^ Fumaria confusa Jord. Bupleurum rotundifolium L. Crucifer^ Aristolochiace^ Cardamine amara L. Aristolochia Ckmatitts L. Teesdalia nudicaulis Br. ^ GeNTIANEjE Caryophyllace^ Cicendia filiformis Delarb. Sagina subulata Wimm. ^ ^ Composite Elatinace^ Cnicus Forsteri Sm. Elatine hexandra DC. „ POLYCONACE^ ' eguminifer* Polygonum mite Sch-ani Genista pilosa L. Trifolium ochroleucum L. Naiadace^ _ Potamogeton obtusifolius M. t^ K. Rosacea ° Alchemilla vulgaris Scop. Or JRAMINE«  Rubus pygmaeus Weihe Festuca sylvatica Fill. R. affinis ir. y N. R. carpinifolius W. y N. F'L'ces Rosa Borreri Woods Asplenium lanceolatum Sm. R. canina v. surculosa Borr. Hymenophyllum Tunbridgense Sm. THE MOSSES {Musci) The swamps in the Sussex forests, the bogs at the foot of the downs, the chalk, itself and the flints upon it, the sand rocks, old walls, and the trunks of trees, especially their north sides, and even the boulders on the shore, will afford plenty of interesting resorts to the bryologist. The mosses delight chiefly in damp and shady situations, though they 58