GEOLOGICAL: DIAGRAM OF BRITISH STRATA. By H. W. BRISTOW, F.R.S., F.G.S. A Sheet, 4s.; on roller and varnished, 7s. 6d. MECHANICAL: DIAGRAMS OF THE MECHANICAL POWERS, AND THEIR APPLICATIONS IN MACHINERY AND THE ARTS GENERALLY. By DR. JOHN ANDERSON. 8 Diagrams, highly coloured on stout paper, 3 feet 6 inches by 2 feet 6 inches. Sheets L1 per set; mounted on rollers, L2. DIAGRAMS OF THE STEAM-ENGINE. By Professor GOODEVE and Professor SHELLEY. Stout paper, 40 inches by 27 inches, highly coloured. Sets of 41 Diagrams (52 1/2 Sheets), L6 6s.; varnished and mounted on rollers, L11 11s. MACHINE DETAILS. By Professor UNWIN. 16 Coloured Diagrams. Sheets, L2 2s.; mounted on rollers and varnished, L3 14s. SELECTED EXAMPLES OF MACHINES, OF IRON AND WOOD (French). By STANISLAS PETTIT. 60 Sheets, L3 5s.; 13s. per dozen. BUSBRIDGE'S DRAWINGS OF MACHINE CONSTRUCTION. 50 Sheets, 12s. 6d. Mounted, L1 5s. LESSONS IN MECHANICAL DRAWING. By STANISLAS PETTIT. 1s. per dozen; also larger Sheets, more advanced copies, 2s. per dozen. LESSONS IN ARCHITECTURAL DRAWING. By STANISLAS PETTIT. 1s. per dozen; also larger Sheets, more advanced copies, 2s. per dozen. PHYSIOLOGICAL: ELEVEN SHEETS. Illustrating Human Physiology, Life Size and Coloured from Nature. Prepared under the direction of JOHN MARSHALL, F.R.S., F.R.C.S., &c. Each Sheet, 12s. 6d. On canvas and rollers, varnished, L1 1s. 1. THE SKELETON AND LIGAMENTS. 2. THE MUSCLES, JOINTS, AND ANIMAL MECHANICS. 3. THE VISCERA IN POSITION.--THE STRUCTURE OF THE LUNGS. 4. THE ORGANS OF CIRCULATION. 5. THE LYMPHATICS OR ABSORBENTS. 6. THE ORGANS OF DIGESTION. 7. THE BRAIN AND NERVES.--THE ORGANS OF THE VOICE. 8. THE ORGANS OF THE SENSES. 9. THE ORGANS OF THE SENSES. 10. THE MICROSCOPIC STRUCTURE OF THE TEXTURES AND ORGANS. 11. THE MICROSCOPIC STRUCTURE OF THE TEXTURES AND ORGANS. * * * * * HUMAN BODY, LIFE SIZE. By JOHN MARSHALL, F.R.S., F.R.C.S. Each Sheet, 12s. 6d.; on canvas and rollers, varnished, L1 1s. Explanatory Key, 1s. 1. THE SKELETON, Front View. 2. THE MUSCLES, Front View. 3. THE SKELETON, Back View. 4. THE MUSCLES, Back View. 5. THE SKELETON, Side View. 6. THE MUSCLES, Side View. 7. THE FEMALE SKELETON, Front View. ZOOLOGICAL: TEN SHEETS. Illustrating the Classification of Animals. By ROBERT PATTERSON. L2; on canvas and rollers, varnished, L3 10s. The same, reduced in size on Royal paper, in 9 Sheets, uncoloured, 12s. THE FORTNIGHTLY REVIEW Edited by JOHN MORLEY. THE FORTNIGHTLY REVIEW is published on the 1st of every month (the issue on the 15th being suspended), and a Volume is completed every Six Months. _The following are among the Contributors:_--