Discussion on Paper No. 6693* Analysis of data from non-equilibrium pumping tests allowing for delayed yield from storage by N. S. Boulton, M.Sc., M.T.C.E. Mr R. W. Stallman (Hydraulic Engineer, U.S. Geological Survey, Denver, Colorado) considered that the Author's contribution tothe understanding of response to pumping in unconfined aquifers is a milestone in groundwater hydraulics. The magnitude of effects on drawdown caused by delayed yield had in the past been estimated only by intuition or wishful thinking, and enforced with intestinal fortitude rather than with academic reason... Discussion on Paper No. 6693* Analysis of data from non-equilibrium pumping tests allowing for delayed yield from storage by N. S. Boulton, M.Sc., M.T.C.E. Mr R. W. Stallman (Hydraulic Engineer, U.S. Geological Survey, Denver, Colorado) considered that the Author's contribution tothe understanding of response to pumping in unconfined aquifers is a milestone in groundwater hydraulics. The magnitude of effects on drawdown caused by delayed yield had in the past been estimated only by intuition or wishful thinking, and enforced with intestinal fortitude rather than with academic reason...