Captain Tunney, of the Bomb Squad, heard in October that two Germans were trying to buy picric acid from a man who stopped at the Hotel Breslin, and who called himself Paul Seib and Karl F. Oppegaarde, as the occasion demanded. Tunney's men located the two Germans, and some days later learned that they had placed an order for fifty-two pounds of TNT, to be delivered at the Weehawken garage. The delivery was intercepted, a similar but harmless substance substituted for the explosive, and two detective-truckmen took the package away on their truck to deliver it to Fay and Scholz. While they were in New Jersey, Detectives Coy, Sterrett and Walsh found Fay at the Breslin, and followed him back to Weehawken. As he left the garage in the evening in his automobile, the automobile of Police Commissioner Woods followed at a discreet distance. Up the Palisades the two cars paraded, until in a grove near Grantwood, Fay and Scholz got out of their car and disappeared into the woods with a lantern. After a time they reappeared, and returned to the garage, the police following. Next morning Chief Flynn was called into the hunt--the morning of Saturday, October 23--and he assigned two special agents to the case. The police department directed two detectives to watch the woods at Grantwood where the conspirators had gone the night before. Detectives Murphy and Fennelly, each equipped with linemen's climbers, arrived at the wood-road about noon, and spent the next eleven hours in the branches of a great oak tree which commanded the road. The perch was high and the night wind chilly, but the watchers were rewarded at last by the twin searchlights of an approaching car. Out of it stepped Fay and Scholz. The men in the branches saw by the light of the lantern which Scholz carried that Fay placed a package underneath a distant tree, walked to a safe distance, exploded a percussion cap, watched the tree topple over and went away, apparently satisfied with the power of his explosives. [Illustration: _Copyright, International Film Service_ Robert Fay, who made bombs with which he hoped to cripple the shipment of munitions to Europe]