P.M.—To Walden.

  At the further Brister’s Spring, under the pine, I find an rlttacus tuna, half hidden under a skunk-cabbage leaf, with its back to the ground and motionless, on the edge of the swamp. The under side is a particularly pale hoary green. It is somewhat greener above with a slightly purplish brown border on the front edge of its front wings, and a brown, yellow, and whitish eye-spot in the middle of each wing. It is very sluggish and allows rue to turn it over and cover it up with another leaf,—sleeping till the night come . . .