| TABLE OF CONTENTS. |
|---|
| I. | [ANTHROPOLOGY.—Investigation of a Mound near JeffersonCity, Mo.—By A.S. LOGAN.—Prehistoric remains from the banksof the Missouri River] |
| II. | [BIOLOGY.—New Observations on the Language of Animals.—ByM. DE LACAZE DUTHIERS.—A lengthy examination of some factsin the language of animals, including birds and quadrupeds] |
| III. | [BOTANY.—Electricity in Agriculture.—By CLARENCE D. WARNER.—Theeffect of currents of electricity upon the germination ofseeds.—Interesting experiments detailed, which can be easily repeated] |
| [Electricity in Horticulture.—The effect of the electric light onvegetation, availability it may possess for the gardener] |
| [Pentapterygium Serpens.—A Himalayan flowering plant introducedin England about ten years ago.—2 illustrations] |
| [The Perforation of Flowers.—What insects do to promote thepropagation of plants by perforating the flowers in search of honey.—16 illustrations] |
| IV. | [CHEMISTRY.—A New Laboratory Process for Preparing HydrobromicAcid.—By G.S. NEWTH.—Simple synthesis of hydrogenand bromium] |
| [Boron Salts.—Boron sulphides and selenides and silicon selenide] |
| [Detection of Peanut Oil in Olive Oil.—A practical laboratorytest for the above adulteration] |
| [Hydroxylamine.—Recent preparation of this compound and itsproperties] |
| [New Boron Compounds.—Compounds of boron, phosphorus, andiodine recently prepared by M. MOISSAN] |
| [Sapotin, a New Glucoside.—By GUSTAVE MICHAUD.—Preparationof a new glucoside from almonds and other sources] |
| V. | [CIVIL ENGINEERING.—Completion of the Mersey Tunnel Railway.—Thepenetration of the bed of the Mersey River by a tunnelat the rate of 150 feet per week.—Details of the work] |
| VI. | [EDUCATIONAL SCIENCE.—Chinese Competitive Examinations.—Interestingdetails of the famous examinations of China.—Fatalconsequences to overworked competitors] |
| VII. | [ELECTRICAL ENGINEERING.—High Speed Engine and Dynamo.—Ahigh speed compound engine, running at 500 revolutionsper minute, with direct-driven dynamo for electric lighting.—3illustrations] |
| VIII. | [MEDICINE.—The Treatment of Rattlesnake Bite by Permanganateof Potassium, Based on Nine Successful Cases.—ByAMOS W. BARBER, M.D.—The use of this powerful disinfectant,and the proper treatment and mode of applying it.] |
| IX. | [METEOROLOGY.—Modification of Our Climate.—By JOSEPHWALLACE.—Climate epochs and the probabilities of the presentclimatic era.—Changes within the records of man] |
| [The Eruption of Krakatoa.—A graphic description of this catastrophe,involving the lives of 35,000 people] |
| X. | [MILITARY ENGINEERING.—The Military Engineer and HisWork.—By Col. W.R. KING.—A Sibley College lecture, treatingof the special problems In fortifications, sieges, and the morepacific work of surveys and explorations] |
| XI. | [MINERALOGY.—Natural Sulphide of Gold.—By T.W.T.ATHERTON.—A probable new occurrence of gold] |
| XII. | [NATURAL HISTORY.—The Living Jerboa in the ZoologicalGarden of Berlin.—A rare rodent from South Africa, one seldomseen alive in captivity.—5 illustrations] |
| XIII. | [NAVAL ENGINEERING.—Twenty-four Knot Steamers.—Thepossibility of fast ships for long voyages.—The prospects and difficulties] |
| XIV. | [RAILROAD ENGINEERING.—A Steam Street Railway Motor.—Anoiseless motor built of steel on trial in Chicago.—1 illustration] |
| XV. | [SANITARY ENGINEERING.—Some Means of PurifyingWater.—Different filtering processes and the subsidence treatmentof water] |
| XVI. | [TECHNOLOGY.—Action of Caustic Soda on Wood.—By M.H.TAUSS.—Direct experiments on the action of lye on wood at variouspressures] |
| [Burning Brick with Crude Oil Fuel.—The use of petroleum inbrick kilns.—Its advantages, cleanliness, and cheapness.] |
| [Chlorine Gas and Soda by the Electrolytic Process.—The decompositionof common salt solution into chlorine and caustic sodaon the commercial scale] |
| [How Enameled Letters are Made.—The manufacture of separateenameled letters as conducted in London.—5 illustrations] |
| [How Mechanical Rubber Goods are Made.—Hose, corrugatedmatting, packing, and jar rings.—Processes of their production] |
