nerve, it looked red from the number of blood-vessels, but the sides were of a blueish black. There were two orifices at the larger corner of the eye. On this same mountain grew in abundance a kind of _Muscus lichenoides_ of a greyish black colour, as if scorched or burnt, different from what authors have described, being more coriaceous and greenish, while that is black and brittle, almost like burnt paper, and smooth underneath; whereas the plant I here observed has the under side entirely covered with fibres like little roots. (This was the true _Lichen velleus_ of Linnæus, preserved in his herbarium, and figured in Dillenius, _tab. 82. f. 5_. See _Fl. Lapp. ed. 2. 360_.) The branches of Spruce Fir here began to show that appearance to which Clusius, if my memory does not deceive me, has given the name of _Pinus nodosa_. These knots consist of innumerable little plates, looking as if all the buds had been cut short, and platted together. In the inside is lodged a great mass of very small oblong insects, or rather eggs. _June 17._ Although I walked about a good deal, and was not inattentive to what came in my way, I met with nothing peculiarly worthy of notice. On the grass I frequently observed that substance like saliva, which the common people call Frog-spittle, and which envelops a little pale flesh-coloured insect like a small Grasshopper. This insect, though not arrived at maturity, moved in some degree, and showed sufficient signs of the family to which it belonged, though it was not yet old enough to cut capers. I removed the frothy moisture from some of these insects, and on returning to them in the course of an hour, I found them covered as before; a proof of the origin of the froth, which is produced by the animal for the purpose of protecting its tender skin against the violent heat of the sun.