| TABLE OF CONTENTS. |
|---|
| I. | [CHEMISTRY.--The Bitter Substance of Hops.--By Dr.H. BUNGENER. --What gives hops their bitter taste?--Processes forobtaining hop-bitter acid.--Analysis of the same.] |
| II. | [ENGINEERING AND MECHANICS.--Improvements in theHarbor of Antwerp.--With engraving of caisson for deepening theriver.] |
| [Progress of Antwerp.--Recent works in theharbor.] |
| [Bicycles and Tricycles.--By C.V.BOYS.---Advantages of the different machines.--Manner of findingthe steepness of a hill and representing same on amap.--Experiments on ball bearings.-- The Otto bicycle.] |
| [The Canal Iron Works, London.] |
| [Marinoni's Rotary Printing Press.--With 2engravings.] |
| [Chenot's Economic Filter Press.--Withengraving.] |
| [Steel Chains without Welding.--Method and machinesfor making same.--Several figures.] |
| III. | [TECHNOLOGY.--Some Economic Processes connectedwith the Cloth Making Industry.--By Dr. WM. RAMSAY.--How to saveand utilize soap used in wool scouring.--To recover the indigo fromthe refuse.--Extraction of potash from suint.--Use ofbisulphide of carbon.] |
| IV. | [PHYSICS. ELECTRICITY, ETC.--Thury's DynamoElectric Machine. --5 figures.] |
| [Breguet's Telephone.] |
| [Munro's Telephonic Experiments.--9figures.] |
| [Apparatus for Maneuvering Bichromate of PotassaPiles from a Distance.--2 figures.] |
| [Magnetic Rotations.--By E.L. VOICE.--1figure.] |
| [Lighton's Immersion Illuminator.--1figure.] |
| [Foucault's Pendulum Experiments.--By RICHARD A.PROCTOR. --4 figures.] |
| V. | [ARCHITECTURE, ART, ETC.--St. Paul's Vicarage,Forest Hill, Kent.--2 engravings.] |
| [Designs for Iron Gates.--An engraving.] |
| VI. | [ASTRONOMY.--A New Lunarian.--By Prof. C.W.MACCORD. --With 3 figures.] |
| VII. | [GEOLOGY.--Coal and its Uses.--By JAMESPYKE.--Formation of carboniferous rocks and the coal in thesame.--Processes of nature.--Greatness of this country due tocoal.--Manufacture of gas.--Products of the same.] |
| VIII. | [NATURAL HISTORY, BOTANY. ETC.--The Wine Fly.--Theegg.--Larva.--Pupa and fly.] |
| [The "Potetometer." an Instrument for Measuringthe Transpiration of Water by Plants.--1 figure.] |
| [Bolivian Cinchona Forests.] |
| [Ferns.--Nephrolepis Davillioides Furcans andNephrolepis Duffi. --2 engravings.] |
| IX. | [PHYSIOLOGY, HYGIENE, ETC.--The Upright Attitudeof Mankind. --Review of a lecture by Dr. S.V. CLEVENGER, in whichhe tries to prove that man must have originated from a four footedbeing.] |
| [Our Enemies, the Microbes.--Affections caused bythe same.-- Experiments of Davaine, Pasteur, and others.--How toprevent bacterides from entering the body.--5 figures.] |
| X. | [BIOGRAPHY.--Gaston Plante, the Scientist.--Withportrait] |
| [Warren Colburn, the AmericanMathematician.] |
