| TABLE OF CONTENTS. |
|---|
| I. | [ASTRONOMY.--A Star Finder.--A simple apparatusthat can be constructed by any mechanic.--1 illustration.] |
| [Photographic Study of Stellar Spectra, HarvardCollege Observatory. --First annual report of the Henry Drapermemorial observations. --Review of the work by Prof. EDWARD C.PICKERING.] |
| II. | [BIOLOGY.--Sponges.--The growth and life history ofsponges.--Report of a recent lecture at the London RoyalInstitution by Dr. R. VON LEDENFELD.] |
| III. | [ELECTRICITY.--Phenomena of AlternatingCurrents.--By Prof. ELIHU THOMSON.--16 illustrations.] |
| IV. | [ENGINEERING.--An English CarCoupling.--Description of an English automatic coupling.--2illustrations.] |
| [A New Process of Casting Iron and other Metalsupon Lace, Embroideries, Fern Leaves, and other CombustibleMaterials. --By A.E. OUTERBRIDGE, JR.--A new and eminentlypractical process of producing ornamental castings.--4illustrations.] |
| [Bricks and Brick Work.--By Prof. T. ROGER SMITH,F.R.I.B.A. --The history and technical review of this subject.--Amost remarkable contribution to the engineering ofarchitecture.] |
| [Link Belting.--By CHARLES A. SCHIEREN.--Aninteresting and practical paper on leather belting made of links.--9 illustrations.] |
| [Recent Progress in Gas Engineering.--A lecture byMr. A. MACPHERSON, of Kirkcaldy, reviewing the last improvements inthis branch.] |
| V. | [MISCELLANEOUS.--Herbet's Tepid Douche.--Apparatusin use for bathing soldiers in the French barracks.--1illustration.] |
| [Kent's Torsion Balance.--A new type of balance,involving torsional suspension instead of knife edges.--5illustrations.] |
| [Preservative Liquid.--Note on preservation oforganic substances.] |
| [The Falls of Gairsoppa.--The great Indian falls,higher than Niagara.--2 illustrations.] |
| [The New British Coinage and JubileeMedal.--Illustrations and descriptions of the new pieces.--8illustrations.] |
| [The Winner of the Derby.--Portrait anddescription of Merry Hampton.] |
| VI. | [NAVAL ENGINEERING.--The Falke Type TorpedoBoat.--The fastest type of British torpedo boat, constructed byMessrs. Yarrow & Co.--1 illustration.] |
| [The German Navy.--The New Gunboat Eber.--Adescription of a late accession to the German navy.--1illustration.] |
| VII. | [ORDNANCE AND GUNNERY.--MagazineRifles.--Continuation of this important article, including theChaffee-Reece, Kropatschek, and other magazine guns.--3illustrations.] |
| [New British Torpedo Experiments.--Experimentswith torpedoes against a ship.--The efficiency or torpedonets.--The effects of Whitehead torpedoes.] |
