DISTRIBUTION OF ANIMALS AND PLANTS IN FELSTEAD, ESSEX. 201 a large bed of Horse-radish. For some years subsequently the leaves were hoed off once in the spring and reaped in the autumn, and in the winter the crowns occasionally fell a victim to the plough- share. This adverse treatment was not excessive, yet the plants only lived about twenty years. The Common Elm (Ulmus campestris), (seedless in England) on the other hand, makes its way well in North Essex. It is the commonest tree in the hedges, and may be said to flourish in the Blackwater valley above Braintree, and seems to delight in striking its roots into the Westleton gravel and sands which there predominate. There are some very fine trees at Saling Grove, and on the village green there, there is a magnificent specimen which girths twenty-one feet at five feet from the ground. It perhaps exceeds a hundred feet in height, and at the top has produced a sport which may be called a tree in miniature. The nidus upon which a seed falls directly affects the distribu- tion of plants, and in some cases ultimately gives a character to the landscape. Thus we often speak of the prevalence of an arenaceous or calcareous flora, which is equivalent to stating the final outcome of distribution for that locality. In Essex these results are not so marked; the variety of forms bearing some proportion to the variety of soils. We are not quite without evidence as to the difficulties plants have met with in colonizing our county. In my neighbour- hood there are a few lanes in which the Chalky Boulder Clay is exposed with scarcely any covering of surface soil, and at some places none at all. The flora of those lanes is, as regards indi- viduals, very meagre, and has been such for the last half century. If therefore plants can make no headway with their present wealth of numbers and immediate contiguity, what a sad disadvantage they must have been at in earlier Post-Glacial times. It may even be conjectured that the colonisation of East Anglia fell behind some other counties. I would here call attention to the general appearance of wild vegetation in North Norfolk as compared with that of Essex and South Sussex—say the neighbourhood of Hastings, or within twenty miles of it. Hedgerows might be taken from Essex and transferred to Sussex, and vice versa, without the possibility of detection; yet this does not hold for North Norfolk. Many species are con- spicuously different there, and the proportion of those remaining are vastly altered ; yet the soil agrees with that of Essex, whilst that