WHAT IS HEATHLAND? The definition of lowland heathland is accepted but the theory of its origin is another matter. It is an easily recognisable open landscape dominated by shrub species growing in packed mono-culture to the exclusion of other plants. The soil is invariably acid and usually too wet or dry to be a good agricultural prospect. Much heathland became common land used by all for stock grazing and the cutting of furze and small wood. To keep it open for grazing, heathland was periodically burned off to destroy developing woody growth. Consequently the absence of trees is typical of the heathland landscape, although in the 1970's this diagnostic point is unreliable, especially in lowland sites. Lowland heathland is an artificially suspended transitional stage in the natural succession culminating in oak woodland. This fact is readily demon- strated in Essex, where most of our remaining heathland is disappearing beneath scrub and secondary woodland, as a result of inadequate stock and rabbit grazing. Geology and climate obviously play an important part in the formation of heathland. Lowland heaths and the vast hill heaths or moors in the north are both treeless and yet are also completely different in geology, rainfall, tem- perature and altitude. The absence of trees on the moors however is thought to be as much due to the unsuitability of the present-day climate for native tree growth as to the systematic burning of heather for the benefit of grouse. It would be wrong to assume that hill heath has developed because trees could not. Pollen research on similar heaths in northern Europe has shown that forest always preceded heathland. The forest was cut by man allowing, through grazing and burning, subsequent development of heathland, which gave way to forest when the early farmers moved on. The cycle was apparently repeated several times until changing climatic factors in recent times brought about unfavourable tree conditions which stabilised the hill heaths. Essex lowland heathland seems to have evolved along similar lines. The earliest maps show it as part of the Great Forest of Essex. Following clearance and several centuries of grazing and burning, a heathland flora developed over ridge areas capped by the Bagshot Hill Zone deposits; a Pleistocene glacial outwash of sand and gravel overlying the London Clay. These deposits are well drained and situated in one of the driest regions in the country; ideal conditions for the development of extensive heathland north of Maldon and east of Great Braxted. RECENT HISTORY OF TIPTREE HEATH Tiptree Heath nowadays is to be found straddling the B1022 road half a mile on the Maldon side of Tiptree. The present-day Heath is a mere fragment of the huge area of heathland that once embraced 16 parishes. The bulk lay 4