in all other respects the plant is the same. It runs to a great length over the hedges, always winding from left to right, and dying to the root on the first frost, The use of the fruit we know sufficiently. The bine or stem contains an excellent hemp for making cloth, canvass, ropes, or paper, and in some countries is so used. A pillow filled with hops has sometimes the effect of an opiate in producing sleep.

Beta, Sea Beet, differs not very much from the garden Beet, though too much to be mistaken for it; has no petals.

Salsola, Glass-wort or Stonecrop, has also no blossom, bears greenish flowers and grows on the sea shore. One species is an ever-green shrub, often planted in gardens, Swertia, Felwort, is found in Wales, a beautiful plant, with spikes of greyish purple flowers.

Gentiana, Gentian. This is a family of plants remarkable for their bitterness, and for the beautiful blue of their flowers. Some species are rare, some very

common.

Xanthium, Bardock, has the male flowers in a bunch at the top of the stem, the female underneath, in the bosom of the leaves.

In the Third Order of this Class, Trigynia, distinguished as usual by three Pistils, we have

Viburnum, Guelder Rose, with ones pecies of which we are acquainted in our gardens. They all bear white flowers, and black or red berries.

Sambuscus, Elder, can scarcely need to be described to us. Medicinal qualities are found in some parts of the tree, and some parts are used in dyeing. The black berries that succeed to its handsome flowers are used for making wine.

Staphylea, Bladder-nut Tree, is a low shrub with white blossoms, and hard, glossy berries.

Corrigiola, Strapwort, is a prostrate plant, with slender, fleshy leaves, growing on the sea shore.

Tamarix, Tamarisk, we have described as given in our Plate.

In the Fourth Order, Tetragynia, four Pistils, we have but one flower, Parnassia, Grass of Parnassus, and that rather curious in its structure. The flower is white, veined with green, and has five nectaries fringed, with a number of yellow globules on the fringe.

The Fifth Order, Pentagynia, five Pistils, contains

Stutice, Thrift. One species of this flower as an edging to the borders of our gardens, is too common to be unknown. On the sea coast it is wild in the greatest abundance, tinting the cliffs and pastures with its pale pink flowers. The other species resemble it, but are less beautiful.

Linum, Flax, one of the most extensively useful plants of which we have to speak. We scarcely need be told that of one species of Flax all our linen is made, and our paper when the linen has been worn to rags. The thread is spun from the stems of the plant. From the seed we have the useful commodity called Linseed Oil. The flower is of a delicate blue, with deeper blue veins.

Drosera, Sundew. These are very curious plants, not easily found, by reason of their being hidden among moss in boggy places. The name seems to be derived from the circumstance of the leaves being fringed with hairs, supporting small drops or globules of a transparent liquor like dew, which continue under exposure to the hottest

sun.

Sibbaldia, Silver-weed, is a creeping plant with yellow flowers, found on the mountains of Scotland. The blossom is smaller than the calix, and the number of Stamens variable.

The Sixth Order Polygynia, many Pistils, contains only Myosurus, Mousetail, a small acrid plant, with narrow leaves and greenish flowers: the receptable of the seeds like the tail of a mouse.

PERSPECTIVE DRAWING.
LESSON VIII.-PLATE 8.

WE propose in this lesson to give the method of forming circles in perspective. In order to do this we must suppose every circle to be contained in a square, and before we can form the circle, we must put the square in such perspective as we desire it. Fig. 1 is a square box, placed horizontally before us.

As

it is similar to the box with which we began our lessons, we trust there is no occasion to describe the manner of finding it. But having formed the box, we desire to form on it a circular line, a picture perhaps. To do this, we draw from corner to corner the diagonals (aa) to find the centre, through which we have a line each way. We next divide each half of the square into thirds, and draw the lines (bb), leaving one third without-side, two within. The crossing of these lines (b) with the diagonals (a) gives us all the points we want for our circle, namely, the points (cccccccc). It is true we could have drawn this circle without these points, because we could have placed ovr compasses in the centre, and drawn them round; and