Boron Salts.--Boron sulphides and selenides and silicon selenide

Detection of Peanut Oil in Olive Oil.--A practical laboratory

test for the above adulteration

Hydroxylamine.--Recent preparation of this compound and its

properties

New Boron Compounds.--Compounds of boron, phosphorus, and

iodine recently prepared by M. MOISSAN

Sapotin, a New Glucoside.--By GUSTAVE MICHAUD.--Preparation

of a new glucoside from almonds and other sources

V. CIVIL ENGINEERING.--Completion of the Mersey Tunnel Railway.--The

penetration of the bed of the Mersey River by a tunnel

at the rate of 150 feet per week.--Details of the work

VI. EDUCATIONAL SCIENCE.--Chinese Competitive Examinations.

--Interesting details of the famous examinations of China.--Fatal

consequences to overworked competitors

VII. ELECTRICAL ENGINEERING.--High Speed Engine and Dynamo.--A

high speed compound engine, running at 500 revolutions

per minute, with direct-driven dynamo for electric lighting.--3

illustrations

VIII. MEDICINE.--The Treatment of Rattlesnake Bite by Permanganate

of Potassium, Based on Nine Successful Cases.--By

AMOS 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 JOSEPH

WALLACE.--Climate epochs and the probabilities of the present

climatic 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 His

Work.--By Col. W.R. KING.--A Sibley College lecture, treating

of the special problems In fortifications, sieges, and the more

pacific 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 Zoological

Garden of Berlin.--A rare rodent from South Africa, one seldom

seen alive in captivity.--5 illustrations

XIII. NAVAL ENGINEERING.--Twenty-four Knot Steamers.--The possibility of

fast ships for long voyages.--The prospects and difficulties

XIV. RAILROAD ENGINEERING.--A Steam Street Railway Motor.--A

noiseless motor built of steel on trial in Chicago.--1 illustration

XV. SANITARY ENGINEERING.--Some Means of Purifying

Water.--Different filtering processes and the subsidence treatment

of water

XVI. TECHNOLOGY.--Action of Caustic Soda on Wood.--By M.H.

TAUSS.--Direct experiments on the action of lye on wood at various

pressures

Burning Brick with Crude Oil Fuel.--The use of petroleum in

brick kilns.--Its advantages, cleanliness, and cheapness.

Chlorine Gas and Soda by the Electrolytic Process.--The decomposition

of common salt solution into chlorine and caustic soda

on the commercial scale

How Enameled Letters are Made.--The manufacture of separate

enameled letters as conducted in London.--5 illustrations

How Mechanical Rubber Goods are Made.--Hose, corrugated

matting, packing, and jar rings.--Processes of their production

* * * * *

Scientific American Supplement, No. 841, February 13, 1892 · 第 5 / 62 题