“Big,” he answered. “Bigger than all the park.”

Frowning and abstracted from a hurry to be off that was by no means assumed, he wheeled one of the emergency machines into the open doorway.

“Want any help?”

The rookie was ready; had grasped the handles of a second cycle.

“No. Do I look like I needed help?” In earnest now he frowned, but not abstractedly. “Don’t want any uniforms following me. Ain’t that kind of a case.”

Without meeting other obstacles, Pape was off upon the marked official machine. About one minute lasted his ride upon this steed, fleeter than Polkadot at his best. As though for the first time noticing the diggers among the park poplars, he stopped with a toot of the cycle siren. Dismounting, he dropped the standard, parked the machine at the side of the road and advanced upon the despoilers. On the way he charged himself that in this “kind of case”—three burlies and a boss to one uniformed objector whose only authority was a woman’s service—mind more than muscle would be needed.

He was met by the thin-faced man. “S’all right, officer. We ain’t looking for Cap’n Kidd’s treasure.”

Pape smiled more inwardly than outwardly, although he felt that he well could afford to do both on being mistaken, a second time within the last few minutes, for a plain-clothes man.

“Who are you and what you up to?” he demanded.

“Name’s Welch—Swinton Welch, contractor. I’m digging a ditch to put in a sub-surface drain. Want to see the permit?”