VII. METEOROLOGY.--Note on the Mt. Blanc Meteorological Station

The Flood at Karlsbad.--Account of the recent flood and of its

destructive effects.--1 illustration

VIII. MECHANICAL ENGINEERING.--Station for Testing Agricultural

Machines.--A proposed establishment for applying dynamometer

tests to agricultural machines.--1 illustration

Steam Engine Valves.--By THOMAS HAWLEY.--A review of modern

slide valve practice, the lap, cut-off, and other points.--6

illustrations

IX. MISCELLANEOUS.--Science in the Theater.--Curious examples of

stage effect in fictitious mesmerizing and hypnotizing.--4

illustrations

Theatrical Water Plays.--Recent episodes in real water plays at

Hengler's Circus, London.--2 illustrations

X. NAVAL ENGINEERING.--The French Ironclad War Ship Colbert.--An

armored wood and iron ship, with central battery.--1

illustration

XI. PHYSIOLOGY AND HYGIENE.--Newer Physiology and Pathology.--By

Prof. SAMUEL BELL. M.D.--An excellent presentation of modern

practice in the light of bacteriology

Test Card Hints.--How to test the eyes for selecting eyeglasses

and spectacles

The Composition of Koch's Lymph.--What Prof. Koch says it is and

what it can do.--The cabled account of the disclosure so long

waited for

XII. TECHNOLOGY.--Firing Points of Various Explosives.--The

leading explosives, with the temperature of their exploding

points tabulated

The Recovery of Gold and Silver from Plating and Gilding

Solutions--A paper of interest to silver and gold platers, as

well as photographers

Water Softening and Purifying Apparatus.--An apparatus for

treatment of sewage, etc., chemically and by deposition.--1

illustration

* * * * *

Scientific American Supplement, No. 787, January 31, 1891 · 第 5 / 71 题