NUMBER 595 OF 600 COPIES OF THE MANUSCRIPT EDITION. Contains a substantial leaf of manuscript from Chapter 6 of "Cape Cod," with corrections in pencil in the author's hand. Thoreau quotes naturalist Edouard Desor, writing: "Yet the same science asserts that marine animals and plants hold a lower rank in the scale of being than land animals and plants. 'There is no instance known of an animal becoming aquatic in its perfect state, after having lived in its lower stage on dry land', but as in the case of the tadpole and the frog, 'the progress invariably points towards the dry land'. In short, that the dry land itself came through and out of the water on its way to the heavens for, 'in going back through the geological ages, we come to an epoch when, according to all appearances, the dry land did not exist, and when the surface of our globe was entirely covered with water'. We looked on the sea then, once more, not as [Greek: ἀτρύγετος] or unfruitful, but as it has been more truly called, the 'laboratory of continents'."