July 29. Tuesday. A northeast wind with rain, but the sea is the wilder for it. I heard the surf roar on the Gurnet [in] the night, which, as Uncle Ned and Freeman said, showed that the wind would work round east and we should have rainy weather. It was the wave reaching the shore before the wind. The ocean was heaped up somewhere to the eastward, and this roar was occasioned by its effort to preserve its equilibrium. The rut of the sea.[269] In the afternoon I sailed to Plymouth, three miles, notwithstanding the drizzling rain, or “drisk,” as Uncle Ned called it. We passed round the head of Plymouth beach, which is three miles long. I did not know till afterward that I had landed where the Pilgrims did and passed over the Rock on Hedge’s Wharf. Returning, we had more wind and tacking to do.

Saw many seals together on a flat. Singular that these strange animals should be so abundant here and yet the man who lives a few miles inland never hear of them. To him there is no report of the sea, though he may read the Plymouth paper. The Boston papers do not tell us that they have seals in the Harbor. The inhabitants of Plymouth do not seem to be aware of it. I always think of seals in connection with Esquimaux or some other outlandish people, not in connection with those who live on the shores of Boston and Plymouth harbors. Yet from their windows they may daily see a family [of] seals, the real Phoca vitulina, collected on a flat or sporting in the waves. I saw one dashing through the waves just ahead of our boat, going to join his companions on the bar,—as strange to me as the merman. No less wild, essentially, than when the Pilgrims came is this harbor.

It being low tide, we landed on a flat which makes out from Clark’s Island, to while away the time, not being able to get quite up yet. I found numerous large holes of the sea clam in this sand (no small clams), and dug them out easily and rapidly with my hands. Could have got a large quantity in a short time; but here they do not eat them; think they will make you sick. They were not so deep in the sand, not more than five or six inches. I saw where one had squirted full ten feet before the wind, as appeared by the marks of the drops on the sand. Some small ones I found not more than a quarter of an inch in length. Le Baron brought me [a] round clam or quahog alive, with a very thick shell, and not so nearly an isosceles triangle as the sea clam,—more like this:

with a protuberance on the back. The sea clam:

A small, narrow clam

which they called the bank clam; also crab-cases, handsomely spotted. Small crab always in a cockle-shell if not in a case of his own. A cockle as large as my fist. Mussels, small ones, empty shells; an extensive bank where they had died. Occasionally a large deep-sea mussel, which some kelp had brought up. We caught some sand eels seven or eight inches long,—Ammodytes tobianus, according to Storer, and not the A. lancea of Yarrell, though the size of the last comes nearer. They were in the shallow pools left on the sand (the flat was here pure naked yellowish sand), and quickly buried themselves when pursued. They are used as bait for bass. Found some sand-circles or sandpaper, like top of a stone jug cut off, with a large nose; said to be made by the foot of the large cockle, which has some glutinous matter on it.[270] A circle of sand about as thick as thick pasteboard. It reminded me of the caddis-worm cases, skate-barrows, etc., etc. I observed the shell of a sea clam one valve of which was filled exactly even full with sand,—evenly as if it had been heaped and then scraped off, as when men measure by the peck. This was a fresher one of the myriad sand-clams, and it suggested to me how the stone clams which I had seen on Cape Cod might have been formed. Perchance a clamshell was the mould in which they were cast, and a slight hardening of the level surface, before the whole is turned to stone, causes them to split in two. The sand was full of stone clams in the mould.[271] I saw the kelp attached to stones half as big as my head, which it had transported. I do not think I ever saw the kelp in situ. Also attached to a deep-sea mussel. The kelp is like a broad ruffled belt. The middle portion is thicker and flat, the edges for two or three inches thinner and fuller, so that it is fulled or ruffled, as if the edges had been hammered. The extremity is generally worn and ragged from the lashing of the waves. It is the prototype of a fringed belt. Uncle Ned said that the cows ate it.[272] We saw in the shallow water a long, round green grass, six or eight feet long, clogging up the channel. Round grass, I think they called it. We caught a lobster, as you might catch a mud turtle in the country, in the shallow water, pushing him ashore with the paddle, taking hold of his tail to avoid being bitten. They are obliged to put wooden plugs or wedges beside their claws to prevent their tearing each other to pieces. All weeds are bleached on the beach.

This sailing on salt water was something new to me. The boat is such a living creature, even this clumsy one sailing within five points of the wind. The sailboat is an admirable invention, by which you compel the wind to transport you even against itself. It is easier to guide than a horse; the slightest pressure on the tiller suffices. I think the inventor must have been greatly surprised, as well as delighted, at the success of his experiment. It is so contrary to expectation, as if the elements were disposed to favor you. This deep, unfordable sea! but this wind ever blowing over it to transport you! At 10 p. m. it was perfectly fair and bright starlight.