. The ancient stone implements, weapons, and ornaments, of Great Britain. that they must have been deposited where they werefound prior to the accumulation of the 9 feet of drifted bedsabove them. They lay in a bed of ochreous sandy clay, about1 foot in thickness, which reposed immediately on the blueLondon clay. In Acton village, the beds of drift which constitute the first * Brit. Assoc. Report, 1869, p. 130. He has also kindly furnished me with oiher piirticulHrs. ACTON AND EALING. 527 patch of gravel occurring at so high a level as we go westwardfrom London, and which form a sort of terrac
. The ancient stone implements, weapons, and ornaments, of Great Britain. that they must have been deposited where they werefound prior to the accumulation of the 9 feet of drifted bedsabove them. They lay in a bed of ochreous sandy clay, about1 foot in thickness, which reposed immediately on the blueLondon clay. In Acton village, the beds of drift which constitute the first * Brit. Assoc. Report, 1869, p. 130. He has also kindly furnished me with oiher piirticulHrs. ACTON AND EALING. 527 patch of gravel occurring at so high a level as we go westwardfrom London, and which form a sort of terrace overlooking the broadvalley of the Thames, attain a thickness of 18 feet, and consistof layers of subangular gravel, mixed with yellow and white sand,very irregularly stratified. The gravel consists principally offlints and Tertiary pebbles, with some of quartz and few mammalian remains, including a tooth of Elephas primigenius,have been found in these beds, but as yet no land or freshwatershells. At a lower level, and cut off from the upper gravels by an. Fig. 454.—Ealing Dean. outcrop of London clay, is a wide terrace of alluvial deposits at anaverage height of about 20 feet above high-water mark, and alower terrace still is to be found in the immediate neighbourhoodof the river. Colonel Lane Foxs researches in the mid-terracebeds of gravel and brick-earth have not produced any implementsof the River-Drift types, but he has obtained animal remainswhich have been identified by Mr. Gf. Busk, , as thoseof Elephas primigenius, Rhinoceros hemitcechus, Hippopotamus major,Bos primigenius, Bison prisons, Cervus tarandus, and other species 528 RIVER-DRIFT IMPLEMENTS. [CHAP. XXIII. of deer. They occur invariably at the base of the gravel, 12 or13 feet from the surface. He is inclined to conjecture that thebottom of the valley may have been excavated by the river morerecently than the Palaeolithic Period. There have, however, been found in the bed of the Thames,at
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