TRACK CHART.
Positions of the trough of low barometer and tracks of vessels, March 11-14, 1888.
Positions at 7 A. M. (Greenwich noon) are indicated on the chart by a point; at noon, ship's time, by a small circle.
Black.—The line of dashes indicates the position of the trough of low barometer, or the line of sudden change from easterly to westerly winds, with brief intervals of calm, shifts of wind in heavy squalls of rain or snow, colder, and, finally, clearing weather.
Red.—Positions and names of land stations and names and tracks of vessels plotted in red are those whose barometer curves are shown in the accompanying Barometer Diagram.
Blue.—The tracks of certain other vessels from which storm reports have been received are plotted in blue. In addition to these, however, storm reports have been received from the following vessels, omitted from the chart in order to avoid confusion:
Transatlantic steamships, westward bound: Glendevon, Lydian Monarch, St. Ronans, Werra.
Coasting steamships, bound south: El Monte, Morgan City, New Orleans. Bound north: Newport.
Sailing vessels off the coast from Montauk point to cape Cañaveral: Spartan, Charles H. Marshall, Caprice, Coryphene, Phebe, Isane Orbeton, John H. Krantz, Arcot, Iroquois, Welaka, Serene, Warren B. Potter, Normandy, Lottic Stewart, Melissa Trask, Wilhelm Birkedal, Johanna, James S. Stone, Auita.
