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قراءة كتاب Scientific American Supplement, No. 648, June 2, 1888.
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اللغة: English
الصفحة رقم: 1
SCIENTIFIC AMERICAN
SUPPLEMENT
NEW YORK, JUNE 2, 1888
Scientific American Supplement, Vol. XXV., No. 648.
Scientific American, established 1845.
Scientific American, established 1845.
Scientific American Supplement, $5 a year.
Scientific American and Supplement, $7 a year.
Scientific American and Supplement, $7 a year.
TABLE OF CONTENTS.
| PAGE | |
| I. ARCHITECTURE.—Evolution of the Modern Mill.—By C. J. H. Woodbury.—Continuation of this Sibley College lecture, treating of the practical details of mill structures. | 10346 |
| II. ASTRONOMY.—Changes in the Stellar Heavens.—By J. E. Gore, F.R.A.S.—Changes of color, brightness, and position in the fixed stars as attested to by the records of the ancient and modern astronomers. | 10355 |
| Distance and Constitution of the Sun.—Modern theories of the sun and difficulties in formulating a satisfactory explanation of all of its phenomena. | 10354 |
| III. BOTANY.—The Common Dandelion.—By Frederick Leroy Sargent.—The properties and life history of this common plant.—Its wonderful seed-distributing apparatus.—8 illustrations. | 10355 |
| IV. CHEMISTRY.—Poison of the Somalis extracted from the Wood of the Ouabaio.—A recently investigated plant principle. | 10358 |
| V. CIVIL ENGINEERING.—Test of a Wrought Iron Double Track Floor Beam.—By Alfred P. Boller.—A test pushed to actual rupture of a full-sized member of a bridge.—1 illustration. | 10344 |
| Timber and Some of its Diseases.—By H. Marshall Ward.—Part V. of this exhaustive treatise of the deterioration of one of the great structural materials.—1 illustration. | 10345 |
| Improved Torpedo Boat.—1 illustration. | 10348 |
| VI. ELECTRICITY.—Effect of Chlorine on the Electro-motive Force of a Voltaic Couple.—By D. G. Gore, F.R.S.—A very curious investigation, disclosing the sudden change in E. M. F. produced by a definite addition of chlorine. | 10351 |
| On a Theory Concerning the Sudden Loss of Magnetic Properties of Iron and Nickel.—By Mr. A. Tomlinson, B.A.—A new theory, involving the probable rearrangement of the molecules or "magnetic atoms" of the metals in question. | 10358 |
| The Passive State of Iron and Nickel.—Note of this curious phenomenon. | 10347 |
| The Wimshurst Electric Machine.—Illustration of 13½ inch sparks produced by it.—1 illustration. | 10352 |
| The Application of Electricity to Lighting and Working.—By W. H. Preece.—Lecture I. | 10350 |
| VII. ENTOMOLOGY.—public@vhost@g@gutenberg@html@files@38403@[email protected]#SYSTEMATIC_RELATIONS_OF_PLATYPSYLLUS_AS_DETERMINED_BY_THE_LARVA12" class="pginternal" |