200 THE ESSEX NATURALIST. Great Canfield a fine specimen of barn-like church exists from Early Norman times. Space forbids any description of this architectural gem. The churches of the whole area are of the forest type, simple in form, with a low Gothic spire, often wood-shingled or weather-boarded (c.f., Scandinavia and the Ardennes). They frequently possess 14th and 15th century porches of great beauty (as at Little Hallingbury). In many cases Roman bricks were incorporated in Norman work. At Leaden Roding the church is a fitting reminder of what is, after all, the basis of the life of the district, for it is built of fragments and boulders from the boulder clay. The district which has just been described is destined to remain agricultural for many a long year. Changes are taking place within it by reason of increased motor facilities and by a persistent, but as yet slight, invasion by Londoners. There were never many crafts here, but nowadays they gradually disappear to be replaced by establishments which deliver goods by van from a few centres. Cottages are being bought at prices prohibitive to the country folk by town dwellers, who form a considerable proportion of the present population of the western parishes. As yet the Roding valley remains almost as it was. These changes render difficult the employment and housing of the people, for the cost of living rises with the introduction of a new social standard. It becomes important, therefore, that more attention should be paid to districts hitherto neglected by many lovers of Essex. The East Anglian Institute of Agriculture has recently stationed a lecturer at Dunmow to advise farmers. Members of the staff are interested in assisting work that is undertaken. Besides an agricultural and soil survey other branches which might be taken up are the keeping of weather records, a study of the flora and fauna, the weeds and the pond life. History and traditions are also important when a place is undergoing change, so that much could be done from the parish registers and collections of letters and other documents still in existence.