"The Invisible Death has reached this point and is working havoc throughout the city, spreading from street to street. Men are dropping dead everywhere. A few have fled, but—"

The sudden ending of the dispatch was significant enough. Tomlinson picked up another dispatch from Columbia, in the same State:

"Invisible Death now circling city," he read. "Business section already invaded. All other telegraphists have left posts. Can't say how long—"

And this, too, ended in the same way. There were piles of such communications, and they had been coming in for eighteen hours. At that moment an orderly brought in a dozen more.

Tomlinson showed the head of the Meteorological Bureau the chart upon the table. "We've plotted out a map as the wires came in, Mr. Graves," he said. "The Invisible Death struck the southeast shore of the United States yesterday afternoon near Charleston. It has spread approximately at a steady rate. The wind velocity—?"

"Remains constant. Seventy miles an hour. Dying down a little," answered Graves.

"The death line now runs from Wilmington, South Carolina, straight to Augusta, Georgia," the Vice-president pursued. "Every living thing that this gas has encountered has been instantly destroyed. Men, cattle, birds, vermin, wild beasts. The gas is invisible and inodorous. These gentlemen believe it may be a form of hydrocyanic acid, but of a concentration beyond anything known to chemistry, so deadly that a billionth part of it to one of air must be fatal, otherwise it could not have traveled as it has done. Warnings have been broadcasted, but there are no stocks of chemicals that might counteract it. Flight is the only hope—flight at seventy miles an hour!"


is voice shook. "This gas has been loosed, as you told us, upon the wings of the hurricane that came through the Florida Strait. What are the chances of its reaching Washington?"