

   NNuummbbeerrss ooff RRoottiiffeerrss bbyy FFlluuiidd DDeennssiittyy

   AArrgguummeennttss::

    density: specific density of fluid

       pm.y: number falling out for P. major

   pm.total: total number of P. major

       kc.y: number falling out for K. cochlearis

     kc.tot: total number of K. cochlearis

   SSUUMMMMAARRYY::

        The data give the numbers of rotifers falling out of
        suspension for different fluid densities. There are two
        species, `pm' Polyartha major and `kc', Keratella
        cochlearis and for each species the number falling out
        and the total number are given.

   DDAATTAA DDEESSCCRRIIPPTTIIOONN::

   SSOOUURRCCEE::

        D. Collett (1991) Modelling Binary Data.  Chapman
        Hall.  p.217

