In examining some masses of the anthracite from Rhode Island, one piece attracted my attention, from the waved structure of the lamellæ into which it separated. The fragments of this were wedge-shaped, and I found the space between some of the laminæ filled up by a fibrous, silky substance, which induced me to break up other masses, in one of which I discovered an abundance of amianthus; the filaments are of a light-green colour in some parts of the mass--in others presenting different shades of brown. With a microscope, I found the fibres intermixed with the anthracite; or forming thin layers, and these sometimes parallel to, at others crossing, in different directions, the course of the laminæ. How far the presence of this mineral may influence the ignition or combustion of the coal, is a question, perhaps, worth determining. Should my engagements permit, I shall make further examination, and inform you. In the mean time, the notice of this fact may call the attention of some of your readers to the subject. At any rate, this substance has, I believe, never before been noticed in connexion with anthracite, and is highly interesting in a geological point of view. REMARKS. We have been familiar with the Rhode Island anthracite, and with the formation of rocks in which it is found; and, long since, observed the fact mentioned by Dr. Webster. The asbestos often is in the form of the most delicate amianthus, frequently blended also with the slate rocks, which form the roof and pavement of this coal. A specimen now lies before us, in which a complete vein of this amianthus, with fibres nearly two inches _in length, connects and pervades_ a mass of slate, supposed to be of the transition class. Similar facts are mentioned also by Dr. Meade, in his account of the Rhode Island coal. RED PYROXENE AUGITE. _Extract of a letter to the Editor, from Dr. H. H. Hayden of Baltimore._ I have very lately discovered a couple of small specimens of the transparent _red_ pyroxene, resembling fine crystals of titanium, which I, at first, mistook it for. One of them is contained in the middle of a large crystal, like the rubellite in the green tourmalins of Massachusetts, but it is not the same substance. The pyroxene, which I have reference to, is the olive-coloured epidote of some, pistazite of others, but resembles, in this instance, the sahlite; the crystals being divisible longitudinally. Some of them are five inches long, and half an inch diameter, hexaedral and double; that is, two joined together, as described by Brochant in particular. Some other localities, of which we have received notices, may be mentioned in a future number. BOTANY. ART. VI. _A List of Plants found in the neighbourhood of Connasarga River, (Cherokee Country) where Springplace is situated; made by_ MRS. GAMBOLD, _at the request of the Rev. Elias Cornelius_.[32] A.