The following remarks of Dr. Wahlenberg display a singular acuteness of observation. They are a complete picture, drawn by a masterly hand, not only to the adept in Natural History, but to every one who has the least taste for beholding the face of Nature, under its most striking and unusual aspects. The able author is, as yet, but slightly known to English readers, even in the more technical part of his science. What we are now to lay before them gives a promise of his taking a high rank amongst writers of a superior and more generally interesting class, one of those in short who touch upon no subject without enriching it. * * * * * Dr. Wahlenberg's remarks are divided into eight sections, each of which describes a separate line of elevation. 1. On approaching the Lapland Alps (_Fjäll_), we first arrive at the line where the Spruce Fir, _Pinus Abies_, ceases to grow. This tree had previously assumed an unusual appearance; that of a tall slender pole, covered from the ground with short, drooping, dark branches; a gloomy object in these desolate forests! The _Rubus arcticus_ had already, before we arrived at this point, ceased to bring its fruit to maturity. With the Spruce we lose the _Rosa cinnamomea_, _Convallaria bifolia_, &c.; and the borders of the lakes are stripped of their ornaments of _Arundo Phragmites_, _Lysimachia thyrsiflora_, _Galium boreale_, and _Carex globularis_. Here is the true station of _Tussilago nivea_ (Willd. Sp. Pl. v. 3. 1970.) The last beaver-houses are seen in the rivulets, and no Pike nor Perch is to be found in the lakes higher up. The boundary of the Spruce Fir is 3200 feet below the line of perpetual snow, and the mean temperature is about 3° of Celsius's thermometer (37-1/2 of Fahrenheit). 2. Scotch Firs (_Pinus sylvestris_) are still found, but not near so tall as in the lower country. Their stems here are low, and their branches widely extended. Here are seen the last of _Ledum palustre_, _Salix pentandra_, _Veronica serpyllifolia_, &c. The bogs have already a very steril appearance. Near the utmost boundary of the Scotch Fir grows _Phaca alpina_. Higher up are hardly any Bears to be met with, and the berries of _Vaccinium Myrtillus_ (the Bilberry) do not ripen well. _Salmo Lavaretus_ (the Gwiniad), and _S. Thymallus_ (the Grayling), soon after disappear from the lakes. The upper limit of this zone, when the Scotch Firs cease, is 2800 feet below the line of perpetual snow, and the mean temperature about 2,°5 of Celsius (36-1/2 of Fahrenheit.) A little below this point, or about 3000 feet before we come to perpetual snow, Barley ceases to ripen; but small farms, the occupiers of which live by grazing and fishing, are met with as far as 400 feet higher, for instance, Naimaka in Enontekis, and so far also potatoes and turnips grow large enough to be worth cultivating.