for those of you who are used to seeing paul frazier sitting in this chair, i should tell you that paul has decided to leave and go on to what i'm sure doing something else. ahem. just a-- just a personal note. good luck, paul. this one's for you. my guest in the studio today is colonel lloyd menninger. he's written a fascinating book called, uh, "up the amazon." colonel, tell us about your trip. thank you, dick. i've always been fascinated by stories about the amazon, so when i retired from the air force, i arranged for some guides and canoes, and, after months of planning, set out to travel from the mouth to the source of the amazon. the whole trip was a medley of pain and pleasure. and why is that, colonel? well, there were times the mosquitoes were so thick, we couldn't see each other. and sometimes the air was so heavy, we felt we were drinking it instead of breathing it. and yet the sheer spectacle unspoiled by any man, was worth every inconvenience. now, did you get to the source of the river? not quite, dick. about five months into the trip, we decided to explore a tributary hun