American Mutual Liability Insurance Co., Boston, Mass., "Watch," 1939. SCALE .6

B. A Map of Hurricanes Which Have Occurred Between September 16 and 30 During the Last Fifty Years in the Eastern Part of the United States.

1. During the half-century ten hurricanes

have struck inland in the latter half of September.

2. Hurricanes usually originate off the

northern coast of South America, move west from Africa, and travel toward the West Indies and Florida, moving about 300 miles per day.

3. The hurricane of 1938 moved 750 miles

in 12 hours from Cape Hatteras, North Carolina, to Burlington, Vermont.

FLOW MAPS

National Rftourcct Board. "Rfport of the Water Planning Committee, Part III," 1934. SCALE .8

A. Prevailing Winds in January and in July in the United States.

1. Arrows to show the course of the wind on a weather map are often seen in daily weather

repKJrts.

2. These two maps shows the prevailing winds for two months in the year.

vmoiNiA

National Re«ourcet Board, "State Planning," 193S.

B. Origin and Ports of Destination of Cargo Shipments of Bituminous Coal from the Great Lakes in the United States in 1932.

The tonnage of the various shipments of coal is given at the end of each line.

GRAPHIC PRESENTATION

American Telephone and Tflfgraph Company, N. Y. C. SCALE .6

Map Showing Where the Hurricane of I9?8 Hit Hardest in the United States.

This map of the path of the 1938 hurricane appeared in an advertisement of the Bell Telephone. Compare with 216B.