60 THE ESSEX NATURALIST. The N.E. corner of the walled Roman Station is about 200 yards from the centre of the site, and numerous rubbish pits of this period occur on the area. Up to the present no worked flint has been recorded in the pits, but the writer has taken worked implements from a depth of three feet in the soil, and it may be a line of enquiry as to a possible Roman date for this flint. Again the lustrous unpatinated condition of the flint and the organic content of the soil is significant. III. Great Chesterford, Site B. Essex. Sheet II. S.E. Longitude 0° 12' 27" E., latitude 52° 3' 39" N. Elevation 140 feet O.D., and about 10 feet above the river level. The site is on a gentle slope up from the water to the valley top. The underlying rock is marked as Middle Chalk on the Geological Survey Map (11), but there is a trace of gravel and probably a thin terrace of post-glacial gravel overlies the Chalk here. The soil is a chalky rain-wash with a fair amount of humus. Flakes, a rough axe, scrapers of various types and hammer stones have been found. A fair percentage of these implements are black and they tend to be rather larger than usual. This is possibly an extension of Site A., which is separated from it by the area occupied by the houses and gardens of the village. IV. Little Chesterford. Essex. Sheet II. S.E. Longitude 0° 12' 44" E., latitude 52° 2' 59" N. Elevation 133 feet O.D., about 5 feet above water level. East of the footpath from Little Chesterford to Springwell and about 370 yards south of the church. The site is at the foot of a bluff composed of post-glacial gravel, here terraced against a low spur of Middle Chalk from the main ridge bordering the valley. It is about 30 yards from the present river course and 3 feet above the level of the present alluvial fiat. The soil is a light coloured sandy loam, from 9 inches to a foot in thickness, and it bears a distinctly calciphilous flora. Spale flakes, cores, many of them of large size, and anvil stones form the bulk of the material found. Implements rare, the only records being a rough hand axe or chopper, and an unfinished axe of doubtful authenticity. The prevailing patina is a creamy white, passing into the blue mottle. The flakes and cores are often encrusted with a deposit of calcium