It is very interesting, when cycling, to notice the changes in passing from one geological formation to another, and in railway travelling, with a geological map, one can quickly observe the transition; the cuttings give an immediate clue, and the contours of the surface and the agriculture are further guides. The alteration in the flora is particularly marked in passing from the Bagshot Sands, for instance, to the Chalk, or from the Lias Clay to the Lias Limestone or the Oolite; the lime-loving plants appear on the Chalk and Limestone, and disappear on the Sands and Clays. The sunken appearance of the old roads is one of the best proofs of their antiquity, and one is inclined to wonder at their windings, but in following the tracks across the Forest moors one gets an insight into the way roads originated. The ancients simply adopted the line of least resistance by avoiding hills, boggy places, and the deep parts of streams, choosing the shallow fordable spots for crossing. The winding road is, of course, much more interesting and beautiful than the later straight roads of the Romans, though no doubt many of the former were improved by the invaders for their more important traffic. It is to be regretted that the formal lines of telegraph and telephone poles and wires have vulgarized so many of our beautiful roads, and destroyed their retired and venerable expression; more especially as in many places these were erected against the will of the inhabitants, and under the mistaken idea that the farmer's business is retail, and that he is prepared to deal in and deliver small quantities of goods daily, receiving urgent orders and enquiries by telephone. The villages in the Vale of Evesham and the Cotswolds afford an excellent illustration of building in harmony with surroundings, and the suitability of making use of local materials. Thus, in the Vale we find mellow old brick, has limestone, half timber and thatch; while on the Cotswolds, oolite freestone and "stone slates" of the same freestone seem the only suitable material. Where the ugly pink bricks and blue slates have of late years been introduced, they appear out of place and contemptible. There is an immense charm about these old villages of hill and vale, and it is curious to think that Aldington was an established community with, probably, as many inhabitants as at the present day, when London and Westminster were divided by green fields.