In the early 1950s, when the proliferation of “elementary” particles was still quite benign, Enrico Fermi is alleged to have complained, “If I could remember all those names, I would have been a botanist.” A decade after Fermi's untimely death in 1954, when the population explosion had engendered a nomenclatural anarchy, Murray Gell‐Mann (Caltech) and Arthur Rosenfeld (Berkeley), two of Fermi's former students, set out to impose some order—at least to the naming of baryons.

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