Abstract
THE Board of Trade has issued an important report (Cd. 5256) on the sight tests used in the mercantile marine during the year 1909. Out of 6084 candidates, 56 failed in form vision, and were-not re-examined; while out of the remaining 6028 there were 86 failures in colour-vision, of whom 31 appealed and were re-examined, with the result that 15 were passed and 16 were finally rejected. The total absolute rejections were, therefore, 71 in 6084, or 1/49 per cent. During the first ten months of the year, colour vision was tested by the three skeins of wool originally recommended for the p'urpose by Holmgren; but during November and December two other skeins, a purple and a yellow, were added. With these the rejections were in somewhat larger proportion (1.81 per cent, against 1.17) than when only three skeins were used; but the total number of candidates examined by the new method (882) was hardly sufficient to afford any basis for a conclusion.
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