Red Mottled Micaceous Clay, with patches of sand 34 6 Red Quartzose Micaceous Sandstone 2 0 Brownish-red Clayey Sand and Sandstone 4 0 Very Hard Micaceous Sandstone, with pebbles of white quartz 4 0 Light Red Clayey Sand 10 0 Red Micaceous Quartzose Sandstone 8 0 Light Red Clayey Sand, small fragments of chalk 2 0 Whitish and Greenish Hard Micaceous Sandstone 6 0 -------- Total 1302 0 -------- The engravings, Figs. 246 to 249, which are on the authority of G. R. Burnell, do not exactly agree with Prestwich's section, but in the main they are both alike. The following summary may be found of service;-- Feet. In. London Clay 236 0 Lower London Tertiaries 88 6 Chalk 644 9 Upper Greensand 13 9 Gault 130 6 Lower Greensand (?) 188 6 [Illustration: WELL AT MICHELMERSH. Fig. 250.] _Michelmersh_, Hants.--Fig. 250 shows a section of a well in this village, comprised within the writer's practice. The shaft is 4 ft. 6 in. in diameter and 400 feet deep, steined both above and below the chalk with 9-inch work, the upper course having rings of cement at every 12 inches. The strata pierced were;-- Feet. In. Surface Soil 4 0 Dark Clay 27 0 Chalk 250 0 Band of Calcareous Sand 2 6 Upper Greensand 17 0 ------- Total 300 6 ------- The water rises some 19 feet in the shaft, and is abundant, although up to the present its quantity has not been tested. _Mile End_, Middlesex.--Well at Charrington, Head, and Co.'s brewery. Figs. 251 to 253. The surface is 33-1/2 feet above Trinity high-water mark. In the upper part there are three iron cylinders built upon 9-inch brickwork, which is carried down into the mottled clay. A 9-inch iron cylinder, partially supported by rods from the surface, rises some 28 feet into the brick shaft into which it is built by means of rings. Another iron cylinder is carried down into the chalk, the space between the cylinders being filled in with concrete. The strata passed were;-- Feet. In. MADE EARTH 7 0