Show A die bit of chalk A sheet 0 of chalk more than 1000 feet in thickness underlies all that portion 0 of england which Is situated to the sout southeast beast of a line crossing the island diagonally from the north sea at flamborough FIam Flam borough head to the coast of the english channel in dorset this mass sive sheet of chalk appears again in france and as tar far east as the crimen crimea and even in central asia beyond the sea 0 of aral there can be b little question that all these now I 1 isolated patches P alche were once connected in a continuous t nou sheet sh et which must therefore have occupied a superficial area about miles long by nearly 1000 broad and to think that these enormous deposits are made up 0 of the microscopic remains of minute sea animals |