Quite unsuspectingly he stalked in through the open door, removed his hat and laid it upon the table, flung himself into a basket-chair, and, withdrawing an enormous silk pocket-handkerchief from his pocket, proceeded to mop the streaming perspiration from his forehead.  At the same moment I whipped a loaded pistol from my pocket, aimed straight at his left eye, and, as he stared at me in amazement, said--