8951

Examination Papers in General Construction.--Eighty-six
questions in engineering propounded by the civil service
examiners of New York city. 8956

IV. MEDICINE AND PHYSIOLOGY.--A New Apparatus for the Study of
Cardiac Drugs.--By WILLIAM GILMAN THOMPSON, M.D.--Ingenious
application of instantaneous photography to the study
of heart movements.--Apparatus and views produced.--3
illustrations. 8966

Creosote a Specific for Erysipelas,--A new cure for this
complaint. 8966

V. METALLURGY.--Primitive Iron Manufacture.--Iron furnace
and blowing apparatus in use in Bengal.--2 illustrations. 8962

VI. MINING ENGINEERING.--The Catastrophe at Chancelade.--
Application of photography to investigating mine disasters.
--4 illustrations. 8962

VII. MISCELLANEOUS.--Celebration of the 500th Anniversary of the
University of Heidelberg. August, 1886. 8957

Useful Bags and How to Make Them.--Interesting paper on the
trunk makers' art.--4 illustrations. 8960

VIII. NAVAL ENGINEERING.--Atlantic Steamers.--By W. JOHN.--
Exhaustive comparison of representative Atlantic liners
and war ships.--3 illustrations. 8954

Jet Propellers.--Hydraulic propulsion of vessels.--
Mathematical examination of this subject. 8951

IX. ORDNANCE.--The New Army Gun.--Description of the 8-inch
steel gun as manufactured at the West Point, N.Y.,
Foundry.--1 illustration. 8952

X. PHYSICS.--A New Thermo Regulator.--1 illustration. 8959

Cohesion and Cohesion Figures.--By WILLIAM ACKROYD,
F.I.C.--Laws of vortex rings examined, and relation of
solubility to cohesion. 8963

Pipette for taking the Density of Liquids.--Apparatus and
calculations for use.--1 illustration. 8959

XI. TECHNOLOGY.--Impurities in Photographic Chemicals, and
Tests for Same.--Table referred to in a paper read before
the Birmingham Photographic Society by G.M. Jones, M.P.S. 8957

Molasses, how made.--Work on Pl