At a recent meeting of the Academy of Natural Sciences of Philadelphia, specimens of boards from the conifers of Utah, were presented from Mr. A. L. Siler. Juniperus Virginiana, the common Red Cedar, is precisely like the wood of the Red Cedar of the Atlantic States; though growing so many miles inland, and at so high an elevation. Juniperus occidentalis, the Western Cedar, has, however, the heart wood brown instead of a rosy red, as in the Eastern kind. Pinus ponderosa, more nearly resembles the wood of Pinus palustris, or Yellow Pine of the East. It is known as the"Heavy Wooded Pine," but we doubt whether it is as heavy, foot for foot, as Pinus palustris. Abies Douglasii is the"Red Pine," and much like, in character and apparent qualities, the Norway Spruce, or "Deal" of Europe. It is evidently a much better wood. Pinus flexilis has no common name among the settlers in Utah. The wood is a whitish brown, rather soft, and showing hardly any grain. Pinus edulis is the " Pinon" of the Mexicans. The wood is as white as a piece of Linden, and brittle. It takes on a remarkably smooth surface under the plane, and may be of some great use by these peculiarties.

The most remarkable wood of the whole is the Pinus aristata, or " Cat Tail Pine." The color is almost as dark as Mahogany, and the fibre is curiously twisted and contorted, so that it is difficult to get a piece for a board free from a flaw; but where a good piece is found, it exhibits a fine silk-like grain, and it would, no doubt, be very useful in fine ornamental work. Mr. Siler remarks that the Pinus ponderosa, called " Heavy Wooded Pine" in the books, is known as the " Long Leafed-Pine" in Utah.