I WAS sitting at one of my favorite spots engaged in looking through my fly-book for some lure that might, perhaps, mend my luck in the afternoon's fishing. At least, I had within the moment been so engaged; although the truth is that the evening was so exceptionally fine, and the spot always so extraordinarily attractive to me this particular angle of the stream, where the tall birches stand, being to my mind the most beautiful bit on my whole estate that I had forgotten all about angling and was sitting with rod laid by upon the bank, the fly-book scarce noted in my hand. Moreover, a peculiarly fine specimen of Anopheles, (as I took it to be) was at that very moment hovering over my hand, and I was anxious to confirm my judgment as well as to enlarge my collection of mosquitoes. I had my other hand in a pocket feeling for the little phial in which I purposed to enclose Anopheles, if I could coax him to alight. Indeed, I say, I was at that very moment as happy as a man need be; or, at least, as happy as I ever expected to be. Imagine my surprise, therefore, at that moment to hear a voice, apparently intended for me, exclaim, Halt! Caitiff!