\HeaderA{rotifer}{Numbers of Rotifers by Fluid Density}{rotifer}
\keyword{datasets}{rotifer}
\begin{Description}\relax
The data give the numbers of rotifers falling out of suspension for
different fluid densities. There are two species, \code{pm}
\emph{Polyartha major} and \code{kc}, \emph{Keratella cochlearis} and
for each species the number falling out and the total number are
given.
\end{Description}
\begin{Usage}
\begin{verbatim}
rotifer
\end{verbatim}
\end{Usage}
\begin{Format}\relax
\describe{
\item[\code{density}] specific density of fluid.

\item[\code{pm.y}] number falling out for \emph{P. major}.

\item[\code{pm.total}] total number of \emph{P. major}.

\item[\code{kc.y}] number falling out for \emph{K. cochlearis}.

\item[\code{kc.tot}] total number of \emph{K. cochlearis}.

}
\end{Format}
\begin{Source}\relax
D. Collett (1991) \emph{Modelling Binary Data.} Chapman \& Hall. p. 217
\end{Source}

