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In the papillomas of the skin commonly known as warts the covering consists of epidermis; in those growing from mucous surfaces it consists of the epithelium covering the mucous membrane. When the surface epithelium projects as filiform processes, the tumour is called a villous papilloma, the best-known example of which is met with in the urinary bladder.

Ordway and party who were sent to Lewis's river for salmon; we have received no inteligence of them since they set out. we desired Drewyer to make some enquiry after the Twisted hair; the old man has not been as good as his word with rispect to encamping near us, and we fear we shall be at a loss to procure guides to conduct us by the different routs we wish to pursue from Traveller's rest to the waters of the Missouri. I met with a singular plant today in blume of which I preserved a specemine; it grows on the steep sides of the fertile hills near this place, the radix is fibrous, not much branched, annual, woody, white and nearly smooth. the stem is simple branching ascending, 21/2 feet high celindric, villose and of a pale red colour. the branches are but few and those near it's upper extremity. the extremities of the branches are flexable and are bent down near their extremities with the weight of the flowers. the leaf is sissile, scattered thinly, nearly linear tho somewhat widest in the middle, two inches in length, absolutely entire, villose, obtusely pointed and of an ordinary green. above each leaf a small short branch protrudes, supporting a tissue of four or five smaller leaves of the same appearance with those discribed. a leaf is placed underneath eah branch, and each flower. the calyx is a one flowered spathe. the corolla superior consists of four pale perple petals which are tripartite, the central lobe largest and all terminate obtusely; they are inserted with a long and narrow claw on the top of the germ, are long, smooth, & deciduous. there are two distinct sets of stamens the 1st or principal consist of four, the filaments of which are capillary, erect, inserted on the top of the germ alternately with the petals, equal short, membranous; the anthers are also four each being elivated with it's fillament, they are linear and reather flat, erect sessile, cohering at the base, membranous, longitudinally furrowed, twise as long as the fillament naked, and of a pale perple colour. the second set of stamens are very minute are also four and placed within and opposite to the petals, these are scarcely persceptable while the 1st are large and conspicuous; the filaments are capillary equal, very short, white and smooth. the anthers are four, oblong, beaked, erect, cohering at the base, membranous, shorter than the fillaments, white naked and appear not to form pollen. there is one pistillum; the germ of which is also one, cilindric, villous, inferior, sessile, as long as the 1st stamens, and marked with 8 longitudinal furrows. the single style and stigma form a perfict monapetallous corolla only with this difference, that the style which elivates the stigma or limb is not a tube but solid tho it's outer appearance is that of the tube of a monopetallous corolla swelling as it ascends and gliding in such manner into the limb that it cannot be said where the style ends, or the stigma begins; jointly they are as long as the corolla, white, the limb is four cleft, sauser shaped, and the margins of the lobes entire and rounded. this has the appearance of a monopetallous flower growing from the center of a four petalled corollar, which is rendered more conspicuous in consequence of the 1st being white and the latter of a pale perple.

Celindric, villose and of a pale red Colour. the branches are but fiew and those near it's upper extremity. the extremities of the branches are flexable and are bent down near their extremities with the weight of the flowers. the leaf is sessile, scattered thinly, nearly lineor tho Somewhat widest in the middle, two inches in length, absolutely entire, villose, obtusely pointed and of an Ordinary green. above each leaf a Small Short branch protrudes, Supporting a tissue of four or five Small leaves of the Same appearance of those discribed. a leaf is placed under neath each branch and each flower. the Calyx is one flowered Spatha. the corolla Superior, consists of four pale perple petals which are tripartite, the Centeral lobe largest and all terminate obtusely; they are inserted with a long and narrow claw on the top of the germ, are long, Smooth and deciduous. there are two distinct Sets of Stamens the first or principal Consists of four, the filaments which are capillary, erect, inserted on the top of the germ alternately with the petals, equal short, membranus; the anthers are also four each being elivated with it's fillaments; they are reather flat, erect sessile, cohering to the base, membranous, longitudinally furrowed, twise as long as the fillament naked, and of a pale purple colour, the Second Set of Stamens are very minute, are also four and placed within and opposit to the petals, those are Scercely precptable while the first are large & Conspicious, the fillaments are capillary equal, very Short white and Smooth. the anthers are four, oblong, beaked, erect Cohering at the base, membanous, Shorter than the fillaments, White naked and appear not to form pollen, there is one pistillum; the germ of which is also one, celindric, villous, inferior, Sessile, as long as the first Stamuns, and grooved. the Single Style and Stigma form a perfect mono petallous corolla only with this difference that the Style which elivates the Stigma or limb is not a tube but solid tho it's outer appearance is that of a tube of a Monopetallous corolla swelling as it ascends and gliding in such manner into the limb that it Cannot be Said where the Style ends or the Stigma begins, jointly they are as long as the Gorilla, while the limb is four cleft, Sauser Shaped, and the margin of the lobes entire and rounded. this has the appearance of a monopetallous flower growing from the Center of the four petalled corollar which is rendered more conspicuous in consequence of the first being white and the latter of a pale purple.

The 'stomach' has three coats: the outermost, which is the common covering of all the intestines, called the peritoneum; the second or muscular coat, consisting of two layers of fibres, by which a constant motion is communicated to the stomach, mingling the food, and preparing it for digestion; and the mucous or villous, where the work of digestion properly commences, the mouths of numerous little vessels opening upon it, which exude the gastric juice, to mix with the food already softened, and to convert it into a fluid called the chyme.

Planted in peaty soil and in a rather damp, shady situation it thrives best, the oval-serrate leaves, covered with white, villous hairs, and pretty rosy flowers, giving it an almost unique appearance. It is a charming rock shrub and perfectly hardy. RHODOTYPOS KERRIOIDES. White Kerria. Japan, 1866. A handsome deciduous shrub, and one that is readily propagated, and comparatively cheap.

From the lips it may spread to the gum and palate, giving to the mucous membrane the appearance of a raised, bright-red, papillary or villous surface. When the disease affects the gums, the teeth may become loose and fall out. [Illustration: FIG.