In late March the shallow, tea-colored waters in the bog behind our house become full of small, round, gelatinous clumps of frog and salamander eggs stuck to submerged or floating objects. One spring I thought of collecting some of these egg masses and watching how they might develop. At the time I knew little about what I was doing and next to nothing about the different types of eggs I found there or what they might develop into. Whatever I learned, I learned afterward. I suppose that is the motto of the amateur naturalist: Collect now, identify later.