The difference of pressure between the outside air and the smoke-box gases may be measured by the difference of the water levels in the limbs of a U tube, one limb being in communication with the smokebox, the other with the atmosphere.
The cause of the climatic variations which brought about this complex history of the Salt Lake region is not known; but it is worthy of note that the periods of highest water levels were coincident with a great expansion of local valley glaciers, some of which terminated in the waters of lake Bonneville.
Little net accretion was observed for tidal water levels in excess of 5m at the lower bank site.
belies the reality of the water levels.
indicative costings for engineering works needed to raise and maintain high water levels on this drained farmland.