OF THE WATERS.

§ 4. The largeness of the bay of Chesapeake, I have mentioned already. From one end of it to the other, there is good anchorage, and so little danger of a wreck, that many masters, who have never been there before, venture up to the head of the bay, upon the slender knowledge of a common sailor. But the experience of one voyage teaches any master to go up afterwards without a pilot.

Besides this bay, the country is watered with four great rivers, viz: James, York, Rappahannock, and Potomac rivers, all which are full of convenient and safe harbors. There are also abundance of lesser rivers, many of which are capable of receiving the biggest merchant ships, viz: Elizabeth river, Nansemond, Chickahominy, Pocoson, Pamunkey, Mattapony, (which two last are the two upper branches of York river,) North river, Eastermost river, Corotoman, Wiccocomoco, Pocomoke, Chissenessick, Pungotegue, and many others. But because they are so well described in the large maps of Virginia, I shall forbear any farther description of them.

These rivers are of such convenience, that for almost every half dozen miles of their extent, there is a commodious and safe road for a whole fleet, which gives opportunity to the masters of ships to lie up and down straggling, according as they have made their acquaintance, riding before that gentleman's door where they find the best reception, or where 'tis most suitable to their business.

§ 5. These rivers are made up by the conflux of an infinite number of crystal springs of cool and pleasant water, issuing everywhere out of the banks and sides of the valleys. These springs flow so plentifully, that they make the river water fresh fifty, threescore, and sometimes a hundred miles below the flux and reflux of the tides, and sometimes within thirty or forty miles of the bay itself. The conveniences of these springs are so many, they are not to be numbered. I shall therefore content myself to mention that one of supplying the country elsewhere, except in the lowlands, with as many mills as they can find work for; and some of these send forth such a glut of water, that in less than a mile below the fountain head, they afford a stream sufficient to supply a grist mill, of which there are several instances.

§ 6. The only mischief I know belonging to these rivers is, that in the month of June annually, there rise up in the salts, vast beds of seedling-worms, which enter the ships, sloops or boats wherever they find the coat of pitch, tar, or lime worn off the timber, and by degrees eat the plank into cells like those of a honey-comb. These worms continue thus upon the surface of the water, from their rise in June until the first great rains after the middle of July, but after that do no fresh damage till the next summer season, and never penetrate farther than the plank or timber they first fix upon.

The damage occasioned by these worms may be four several ways avoided.

1. By keeping the coat (of pitch, lime and tallow, or whatever else it is) whole upon the bottom of the ship or vessel, for these worms never fasten nor enter, but where the timber is naked.

2. By anchoring the large vessel in the strength of the tide, during the worm season, and hauling the smaller ashore; for in the current of a strong tide, the worm cannot fasten.

3. By burning and cleaning immediately after the worm season is over; for then they are but just stuck into the plank, and have not buried themselves in it; so that the least fire in the world destroys them entirely, and prevents all damage that would otherwise ensue from them.

4. By running up into the freshes with the ship or vessel during the five or six weeks that the worm is thus above water; for they never enter, nor do any damage in fresh water, or where it is not very salt.