WITH reference to Dr. Mill's recent interesting article on “Time Standards of Europe,” I beg leave to emphatically take exception to the remark on p. 176, that “the system of numbering the hours of the day from 0 to 24 has failed to hold the popular fancy,” as I maintain that the public has had no opportunity of testing the convenience of such a reckoning. The ordinary standard used in this country being railway time, so long as Bradshaw is printed on the old system of numbering the hours only up to 12, it is out of the question to expect the public to adopt any other. Any number of clock-faces numbered otherwise, either at Greenwich or all over the country, would not lead people to adopt the new system; the railway tables must first be altered, and as Bradshaw is compiled from the tables of separate companies, probably it would be necessary to approach the numerous railway companies with a view to their considering the subject and deciding upon a common plan. They would have to discuss not only the question of printing the time-tables on the new plan, but also whether it would be necessary, as well, to alter all the clock-faces at every station. I am given to understand that one railway company (in the Isle of Wight) for some time printed its tables—if it does not still—with the afternoon hours numbered from 12 to 23; though its example, because, I presume, it was of a small and uninfluential line, was not copied by any other company.