Miller's Class Drawing Models.--These Models are particularly adapted for teaching large classes; the stand is very strong, and the universal joint will hold the Models in any position. _Wood Models_: Square Prism, 12 inches side, 18 inches high; Hexagonal Prism, 14 inches side, 18 inches high; Cube, 14 inches side; Cylinder, 13 inches diameter, 16 inches high; Hexagon Pyramid, 14 inches diameter, 22 1/2 inches side; Square Pyramid, 14 inches side, 22 1/2 inches side; Cone, 13 inches diameter, 22 1/2 inches side; Skeleton Cube, 19 inches solid wood 1 3/4 inch square; Intersecting Circles, 19 inches solid wood 2 1/4 by 1 1/2 inches. _Wire Models_: Triangular Prism, 17 inches side, 22 inches high; Square Prism, 14 inches side, 20 inches high; Hexagonal Prism, 16 inches diameter, 21 inches high; Cylinder, 14 inches diameter, 21 inches high; Hexagon Pyramid, 18 inches diameter, 24 inches high; Square Pyramid, 17 inches side, 24 inches high; Cone, 17 inches side, 24 inches high; Skeleton Cube, 19 inches side; Intersecting Circles, 19 inches side; Plain Circle, 19 inches side; Plain Square, 19 inches side. Table, 27 inches by 21 1/2 inches. Stand. The set complete, L14 13s. Vulcanite Set Square, 5s. Large Compasses, with chalk-holder, 5s. *Slip, two set squares and =T= square, 5s. *Parkes's Case of Instruments, containing 6-inch compasses with pen and pencil leg, 5s. *Prize Instrument Case, with 6-inch compasses, pen and pencil leg, 2 small compasses, pen and scale, 18s. 6-inch Compasses, with shifting pen and point, 4s. 6d. Small Compass, in case, 1s. * Models, &c., entered as sets, can only be supplied in sets. LARGE DIAGRAMS. ASTRONOMICAL: TWELVE SHEETS. By JOHN DREW, Ph. Dr., F.R.S.A. Prepared for the Committee of Council on Education. Sheets, L2 8s.; on rollers and varnished, L4 4s. BOTANICAL: NINE SHEETS. Illustrating a Practical Method of Teaching Botany. By Professor HENSLOW, F.L.S. L2; on rollers and varnished, L3 3s. CLASS. DIVISION. SECTION. DIAGRAM. { { Thalamifloral 1 Dicotyledon { Angiospermous { Calycifloral 2 & 3 { { Corollifloral 4 { { Incomplete 5 { Gymnospermous 6 { Petaloid { Superior 7 { { Inferior 8 Monocotyledons { { Glumaceous 9 BUILDING CONSTRUCTION: TEN SHEETS. By WILLIAM J. GLENNY, Professor of Drawing, King's College. In sets, L1 1s. LAXTON'S EXAMPLES OF BUILDING CONSTRUCTION IN TWO DIVISIONS, containing 32 Imperial Plates, L1. BUSBRIDGE'S DRAWINGS OF BUILDING CONSTRUCTION, 11 Sheets. 2s. 9d. Mounted, 5s. 6d.