‘*A DIEU VAT!” 227 it may almost be called unlimited ; and in any case it is thousands of times superior to the innumerable explo- sives now known. Under these conditions, it is plain that the tunnelling, although the rock is so hard and thick, will be finished in about a week, September 19th.—For some time I have observed that the phenomenon of the tide, which may be observed very accurately through the submarine tunnel, produces currents in a contrary direction twice in the twenty-four hours. It is therefore not to be doubted that a floating object thrown on the surface of the lagoon would be carried out by the ebb tide, if the upper part of the aperture were disclosed. Now, does not this disclosure take place during the lowest stage of the equinoctial tides ? Ishallsoon beable to ascertain, as we are precisely at that period. The day after to-morrow will be the 21st of September, and to-day is the 19th. I could distinguish the upper part of the aperture beneath the water at low tide. Well, although I cannot myself attempt to get through the tunnel, why could not a bottle thrown upon the water have the luck to do so during the last few minutes of the ebb tide? And why should not an accident—ultra- providential, I admit—cause the bottle to be picked up by some ship passing Backcup? The currents even might cast it on one of the Bermuda coasts. And if that bottle were to contain a statement— This idea engrosses my mind; but there are objections Q 2