At neap tides.
At neap tides to 25 ft.
About the time of the maxima there must be a longer tidal range (that is, a greater rise and fall than the average); the difference between neap tides and spring tides will also be increased, and as results of these conditions there must be great tidal floods breaking over lowlying coasts and producing extensive denudation.
It was thought at one time that a MS. of the Latin poet Propertius at Naples (Neap. 268)268) might have independent value as an authority for the text.
36, 49 in the Laurentian library) had a gap at the beginning of the line and only the end words "uetus est tutela draconis," with the marginal note "non potuit legi in exemplari hoc quod deficit," and that Neap. 268 gives the line as follows, "non potuit legi uetus est tutela draconis."
On the other hand, Pelvetia canaliculata, which marks the upper belt, is exposed for longer periods, and during neap tides may not be reached by the water for many days.