Four pounds of nitroglycerine are enough to work fearful havoc and mischief.

CHAPTER XVIII

FRED SLIDES INTO THE FREEZE

Monday's "Blade" contained additional light on the nitroglycerine affair—-or what passed as "light."

Len Spencer and the local police had discovered that at least three of the wealthiest men in town had received, during the last few weeks, threatening letters from cranks.

These cranks had all demanded money, under pain of severe harm if they failed to turn over the money.

It now developed that the police chief and Officer Hemingway had, some time before, arrested a nearly harmless lunatic, who, it was believed had written the letters. The man with the unbalanced mind did not appear dangerous, yet, in view of his threats, he had been quietly "railroaded" off to all asylum for the insane.

Now, the arrival of four pounds of nitroglycerine at the local express office was believed to show that the lunatic had had comrades, or else that the crazy man had been used merely as a tool.

Hemingway hurried off to the asylum, to interview the unfortunate one. All the plain clothes man succeeded in getting, however, was a rambling talk that didn't make sense.

Monday's "Blade" announced that the chief of police had been authorized to offer a reward of five hundred dollars for information leading to the arrest and conviction of the party or parties behind the criminal shipment of the giant explosive to Gridley.