§ Mr. SHIELDasked the Secretary for Mines the number of miners in the coal mines of Great Britain certified to be suffering from miners' nystagmus for the years 1923, 1924, 1925, 1927, 1928, and 1929; and in which coalfield in the country nystagmus is most prevalent?
§ Mr. TURNERThe answer to the first part of this question is given in the table appended. In 1928, the last year for which information is as yet available, the incidence of new cases of nystagmus, in proportion to the number of miners employed, was greatest in Ayrshire.
Year. Cases continued from previous year. Cases in which first payment was made during year. 1923 … 7,270 3,872 1924 … 7,635 3,271 1925 … 7,890 3,444 1927 … 7,933 1,801 1928 … 7,264 2,554