Collections at the upper Neosho station were more intensive than at any
other station, especially in 1959. Rotenone was used in the summers of
1957, 1958 and 1959, to obtain large samples of the population in one
section of the stream. In September, 1959, the shocker was used in other
sections in order to estimate populations in particular pools and
riffles, to measure variability in the fauna between areas having
slightly different habitat, and to record movement of marked individuals
in a short section of the stream.