The multiple deltas must have formed sequentially, which led Thompson (1982) to conclude that the eskers were built in successive segments.

They generated many offspring.

One of the hidden glories of Victorian engineering is proper drains.[…]But out of sight is out of mind. And that[…]means that many old sewers have been neglected and are in dire need of repair.

His own most-successful effort proves his point—good lines, bright satire and un[-]dirty comedy are fine in themselves, but Mr. Ritchard makes them superb.