| TABLE OF CONTENTS. |
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| | PAGE. |
| I. | [ARCHITECTURE.—Elements of Architectural Design.—By H.H. Statham.—The commencement of a series of lectures delivered before the London Society of Arts, giving the line of development of the different styles and the aspirations of their originators. 34 illustrations.] | 10106 |
| II. | [ASTRONOMY.—A Fivefold Comet.—A curious astronomical deduction; the probable division of one comet into five by the disturbing effects of the sun. 1 illustration.] | 10116 |
| III. | [BIOGRAPHY.—Linnæus.—By C.S. Hallberg.—The life and work of the great botanist, his portrait and birthplace. 2 illustrations.] | 10114 |
| IV. | [CHEMISTRY.—An Apparatus for Preparing Sulphurous, Carbonic, and Phosphoric Anhydrides.—By H.N. Warren.—A simple apparatus for this purpose described and illustrated. 1 illustration.] | 10117 |
| [The Arrangement of Atoms in Space in Organic Molecules.—A review of Prof. Johannes Wislicenus' recent theories on this abstract subject.] | 10117 |
| [The Isolation of Fluorine.—Note on this last isolation of an element, with the properties of the gas. 1 illustration.] | 10117 |
| V. | [ELECTRICITY.—Observations on Atmospheric Electricity.—By Prof. L. Weber.—Abstract of a British Association paper on this important subject.] | 10114 |
| [The Menges Thermo-Magnetic Generator and Motor.—The direct conversion of electricity into heat; the generator fully described. 5 illustrations.] | 10113 |
| VI. | [ENGINEERING.—An Investigation into the Internal Stresses Occurring in Cast Iron and Steel.—By General Nicholas Kalakoutzky.—First installment of an elaborate paper, giving theoretical and experimental examination of this subject. 2 illustrations.] | 10105 |
| [Hargreaves' Thermo-Motor.—A new caloric engine.—Its construction, theory, and cylinder diagrams. 6 illustrations.] | 10104 |
| [The Compound Steam Turbine.—A description and discussion of this motor, in which a series of forty-five turbines are acted on by the current of steam. 2 illustrations.] | 10103 |
| VII. | [MISCELLANEOUS.—Cold Storage for Potatoes.—The application of artificial cold to preserving potatoes.—Results obtained in actual experience.—A practical paper by Mr. Edwin Taylor.] | 10115 |
| [Great Warmth In Paper.] | 10118 |
| VIII. | [PHYSICS.—On a Method of Making the Wave Length of Sodium Light the Actual and Practical Standard of Length.—By Albert A. Michelson and Edward W. Morley.—Description of the new standard of length and outlines of the practical method for its determination.—The question of check determinations. 1 illustration.] | 10115 |
| IX. | [TECHNOLOGY.—Progress of the Sorghum Sugar Industry.— Elaborate report on the diffusion process as developed at the Fort Worth, Kan., station. 2 illustrations.] | 10110 |
| [The Lowe Incandescent Gas Burner.—The well known advanced type of gas burner described and illustrated. 1 illustration] | 10110 |