NOTE.—Contains on reverse, Highest velocity of wind, direction, and date of occurrence, during May, 1900-12.—Monthly mean temperature and departure from normal, during May, 1907.—Direction and percentage of prevailing winds at stations on Great Lakes, during May, 1900-09.—Total amount of snow, in inches, unmelted, during May. 1900-12.—Distribution of radiotelegraph stations on Great Lakes, and call lettors for each.—Approximate location or submarine signal bell stations.—Location of storm warning towers and flagstaffs.
The meteorological charts and supplements of the north Atlantic, north Pacific, and Indian oceans, and the Great Lakes, monthly, and of the south Atlantic and south Pacific oceans, quarterly, are issued by the Weather Bureau for gratuitous distribution to cooperating shipmasters and others interested in ocean meteorology.