| TABLE OF CONTENTS. |
|---|
| I. | [ENGINEERING AND MECHANICS.--Soaking Pits for SteelIngots. --On the successful rolling of steel ingots with their owninitial heat by means of the soaking pit process. By JOHN GJERS. 6figures.--Gjers' soaking pits for steel ingots.] |
| [Tempering by compression.--L. Clemandot'sprocess.] |
| [Economical Steam Power. By WILLIAM BARNET LEVAN.] |
| [Mississippi River Improvements near St. Louis,Mo.] |
| [Bunte's Burette for the Analysis of Furnace Gases.2 figures.] |
| [The "Universal" Gas Engine. 8 figures.--Improvedgas engine.] |
| [Gas Furnace for Baking Refractory Products. 1figure.] |
| [The Efficiency of Fans. 5 figures.] |
| [Machine for Compressing Coal Refuse into Fuel. 1figure.-- Bilan's machine.] |
| [Hank Sizing and Wringing Machine. 1figure.] |
| [Improved Coke Breaker. 2 figures.] |
| [Improvements in Printing Machinery. 2figures.] |
| II. | [TECHNOLOGY AND CHEMISTRY.--Apparatus forObtaining Pure Water for Photographic Use. 3 figures.] |
| [Black Phosphorus.--By P THENARD.] |
| [Composition of Steep Water] |
| [Schreiber's Apparatus for Revivifying Bone Black.5 figures.-- Plant: elevation and plan.--Views ofelevation.--Continuous furnace.] |
| [Soap and its Manufacture from a Consumer's Pointof View. (Continued from SUPPLEMENT, No. 330).] |
| [Cotton seed Oil.--By S. S. BRADFORD.] |
| [On some Apparatus that Permit of EnteringFlames.--Chevalier Aldini's wire gauze and asbestosprotectors.--Brewster's account of test experiments.] |
| III. | [ELECTRICITY, LIGHT. ETC.--On a New Arc ElectricLamp. By W. H. PREECE. 6 figures--The Abdank system.--The lamp.--The Electro-magnet.--The Cut-off.--The electricalarrangement.] |
| [Utilization of Solar Heat.] |
| IV. | [NATURAL HISTORY.--The Ocellated Pheasant. 1figure.] |
| [The Maidenhair Tree in the Gardens at Broadlands,Hants, England. 1 figure.] |
| [The Woods of America.--The Jessup collection inthe American Museum of Natural History, Central Park, and thecharacteristics of the specimens.] |
| V. | [AGRICULTURE, ETC.--An IndustrialRevolution.--Increase in the number of farms.] |
| [A Farmer's Lime Kiln. 3 figures.] |
| [The Manufacture of Apple Jelly.] |
| [Improved Grape Bags. 4 figures.] |
| VI. | [ARCHITECTURE, ETC.--The Building StoneSupply.--Granite and its sources.--Sandstone.--Blue and graylimestone.--Marble.-- Slate.--Other stones.--A valuable summary ofthe sources and uses of quarry products.] |
| VII. | [ASTRONOMY. ETC.--How to Establish a TrueMeridian. By Prof. L. M. HAUPT.--Introduction.--Definitions.--Tofind the azemuth of Polaris.--Applications, etc.] |
| VIII. | [MISCELLANEOUS.--A Characteristic Mining"Rush."--The Prospective Mining Center of Southern NewMexico.] |
| [The Food and Energy of Man. By Prof. DECHAUMONT.--Original food of man.--Function of food.--Classes ofalimentary substances.--Quantity of food.--Importance of varieddiet.] |
| [Rattlesnake Poison.--Its Antidotes. By H. H.CROFT.] |
| [The Chinese Sign Manual.--The ethnic bearing ofskin furrows on the hand.] |
| [Lucidity.--Matthew Arnold's remarks at thereopening of the Liverpool University College and School ofMedicine.] |
