<正> Tuesday, November 10, 1987, promised to be a wonderful day for ManfredPiller, a 22-year-old recent graduate of the Swiss-army-officer school. Thethin morning cloud slowly lifted over Nepal’s Royal(尼泊尔皇家)National Park, a368-square-mile nature reserve(保护区). A native guide was to show himaround the park, in which lived over 400 kinds of birds, 80 tigers, 400 Indian