ste.--To Tan Lace Leather
with Softsoap.

Practical Dyeing Recipes: Blue white zephyr, Scotch blue on worsted,
Scotch green on worsted, jacquineaux on worsted, drab on worsted, gold
on venetian carpet yarn, red brown slubbing, scarlet braid, slate
braid, light drab on cotton, blue on cotton, brown on cotton, chrome
orange on cotton carpet yarn, black on common mixed carpet yarn for
filling, black on cotton and wool mixed yarn.

Damar Varnish for Negatives.--To Make Vignetters by Means of
Gelatino-Chromate.--Resorcine Colors.--Phosphate Soaps.--Substitution
of Different Metals in Ultramarine Colors.--A Harmless Green for Paper
Hangings.--Siegwart's Bath for Etching Glass.--Composition of French
Bronzes.--A New Enemy to the Tea Plant.--The Bradford Oil Sand.

IV. CHEMISTRY AND METALLURGY.--Apparatus for Titration, 1
figure.--Palladium.--Haemocyanin.--Test for Alcohol in Ethereal Oils
and Chloroform.--Reaction of Tartaric and Citric Acid.--A Peculiar
Observation.--Insolubility of Iodate of Lead.--Mode of Preventing the
Contamination of Water with Lead.--Separating Phosphorus from Iron and
Steel.--Production of Alcohol without Fermentation.

V. ELECTRICITY, LIGHT, HEAT, ETC.--Some Facts in regard to Telescopic
and Stereoscopic Vision.--The Centenary of the Birth of Sir Humphry
Davy. His boyish days. His first chemical experiments. His first
lecture at the Royal Institution. A very entertaining biographical
sketch.--Light and Heat in Gas Flames.--Nickel Needles for
Compasses.--The Nature of the Elements.--A New Compound Prism for
Direct Vision Spectroscopes.

VI. MEDICINE AND HYGIENE.--Filaria in the Eye. By CHAS. S. TURNBULL,
M. D.--The Species of Tapeworm now Prevalent.--Nitrous Oxide under
Pressure.

VII. NATURAL HISTORY, GEOLOGY, ETC.--A Gigantic American Deep-sea
Crustacean, 1 engraving.--Glaciers in the United States.--The Toulomne
Cave.--Archaeological Explorations in Tennessee. By F. W. PUTNAM. 6
figures.--Memorably Cold Winters.--Life at Timber Line. By Professor
C. E. ROBINS, Summit, Colorado.--The Walled Lake in Iowa.

VIII. ASTRONOMY.--Is the Moon Inhabited? By CAMILLE FLAMMARION. The
various opinions that have been held in regard to the moon. The best
we can do with our present telescopes. The means we possess for
judging of the condition of the moon. Recent changes on the moon.
Photographs of the moon and their defects. Facts that have been
observed by the persevering eyes of astronomers.

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