boge must be added to the green and more water for the Stipulæ and Bractea. For the blossom we require only some Red Lake, put on very lightly, darkening it a little towards the base of the Petals and in the opening of the flower. A deeper mixture of the same colour is to be applied to the prickles, and in very fine dots round the edges of the Stipulæ and Bractea. A strong Gamboge may then be applied to the Stamina, and to the Pistilla a pale yellow green. Fig. 1 and 2 washed with light green. Plate 2. As this Plate contains but detached parts of flowers, the colouring is immaterial-The leaves and stems may be washed with green as above. The root, 5, 6, with pale Seppia; the Pistils and Stamens with Gamboge; the Petals, 3, with a mixture of Lake and Prussian Blue. Plate 3. Malva Moschata. Mix the green as before, and go over the whole of the leaves, stems, and calix. Take then a pale mixture of Red Lake and the least possible quantity of Prussian Blue, and wash over the Petals. This colour may then be made deeper and with rather more Blue, to tint the Stamens and Pistils, leaving the Filaments white at the bottom. Plate 4. Circea Lutetiana. The leaves washed with green as before-the Stems and Calix with a yellowish and rather lighter green. Wash the Petals with the palest pink possible; then with a deep pink, (Red Lake,) touch up the points of the Calix, the Germen, the Buds, and the joints of the Stems and Fruit-stalks-leave the Stamina white, and make the Pistilla of the brightest red. Plate 5. Ruscus Aculeatus. The green for this plant must be deadened by using Indigo instead of Prussian Blue. With this the whole plant may be washed equally, except the three small Petals, which must be left of a greenish white-a very pale touch of greenish yellow will do this-The base of the Stamens to have a spot of Lake, and also the little flower-stalk that fixes the flower to the leaf. Plate 6. Scabiosa Succisa. The stems, leaves, and calix washed with rather a yellowish green, then touched at the joints and on the mid-rib of the leaves, with Lake: the Calix shaded and pointed with Burnt Umber. For the flowers a pale Prussian Blue with the least admixture of Lake Filaments of the Stamens the same colourthe Anthers with a little more Lake in the blue. SECOND VOL. Plate 7. Anagallis Tenella. Make the green of the leaves as bright as possible. Colour the little leaf-stalks brightly with Lake and Gamboge mixed, and put a little Lake on the Stem and Calix; but none on the flowerstalks, which must be of a pale yellow green. Make the Petals of a very pale Pink, rather deeper at the points, and finely striped with a deeper pink. The Stamina tinted with Gamboge-Filaments paler yellow than the Anthers. Plate 8. Tamarix Gallica. Tint all the leaves with a bright green-the whole of the stem, and the scales upon the stem with a deep red, composed of Lake and Gamboge. The flowers of the palest pink; buds rather deeper than those that are blown-Stamens of a deep pink. Plate 9. Convalleria Maialis. The leaves of an even green, made with a little Brown Pink: stems of a paler colour. The flowers washed with an almost impercep tible tint of Gamboge. Plate 10. Enothera Biennis. The leaves of the usual green: stem paler. The mid-rib of the leaves a bright Lake. The Petals to be washed with a palę Gamboge, the Stamens and the Stile with the same colour deepened-the summit of the Pistil light green. Plate 11. Butomus Umbellatus. Stem and leaf of an equal green. The Petals to be washed all over with a bright Lake, with the least possible mixture of Prussian Blue, scarcely enough to give it a purple tinge. Then put the same colour rather stronger in the centre of each Petal, shadowing it off lighter towards the edge. In the centre of those Petals of which you see the outside, put, in like manner, a strong shadow of Burnt Sienna or Burnt Umber, as also on the unblown flowers. Let the Filaments be of a paler pink than the Petals, with yellow Anthers-the Pistils of very deep Lake, with a little Prussian Blue, so as to make a crimson much deeper than the Petals. The flower-stalks more red than green; at the base a strong red. Involucrum round the Stalks a light Burnt Sienna, shadowed rather deeper in streaks. Plate 12. Lychnis Dioica. Leaves of a bright green -Stems and Calix washed first with a paler green, then very strongly tinged with Lake, particularly about the buds, so as to become almost red. The Petals of a bright Lake, leaving the small scales at the mouth of the tube quite white. The principal caution to be observed is to lay the colour on equally, and not so thick as to obscure the shadowing of the plate. PERSPECTIVE DRAWING. FEARING that the directions given in our last lesson for finding the windows of the bow, may not have been very clear, we purpose to repeat them on a larger scale, and separated from the bow itself, which we shall consider to have been previously found according to our last rule. In Plate 12, Fig. 1, we have a bow of twenty-six feet diameter: it contains three windows, of which the proportion of each window to the space of wall between them, is as six feet to two-and we have thus marked them on the scale by the dotted lines (a a a.) We draw thence to the point of distance (F) the diagonals (bb.) From the points where these diagonals cut the visual ray (cc), which is the base of the house, we pro |