  While the assumption of the ``no-slip" condition at a solid boundary is
unquestioningly applied to study the flow characteristics of the Navier-Stokes
fluid, there was considerable debate amongst the early pioneers of fluid
mechanics, Du Buat, Girard, Navier, Coulomb, Poisson, Prony, Stokes and others,
as to the proper condition that pertains at a solid boundary due to a fluid,
such as water flowing adjacent to the same. Contemporary usage of the
``no-slip" boundary condition notwithstanding, M\'alek and Rajagopal outlined a
methodology to test the validity of the assumption. In this study, we continue
the investigation further by providing a scheme for determining the
slip-parameter that determines the extent of slip, if one presumes that
Navier-slip obtains at the boundary. We find that depending on whether the
volumetric flow rate is greater or less than the volumetric flow rate
corresponding to the no-slip case, different scenarios present themselves
regarding what transpires at the boundary.
