Part one. Observation: man and trout. How to see trout ; Where trout lie ; Light patch ; Clues to feeding behavior ; Rise as a guide to the fly ; Locating invisable fish ; Surface rise-forms --
Part two. Vision: trout and man. How the trout sees ; What the trout sees of the fly ; What the trout sees of the angler --
Postscript --
Appendix: How to tie the USD paraduns and the USD poly-spinners.
