Munro's Telephonic Experiments.--9 figures.

Apparatus for Maneuvering Bichromate of Potassa Piles from a
Distance.--2 figures.

Magnetic Rotations.--By E.L. VOICE.--1 figure.

Lighton's Immersion Illuminator.--1 figure.

Foucault's Pendulum Experiments.--By RICHARD A. PROCTOR.
--4 figures.

V. ARCHITECTURE, ART, ETC.--St. Paul's Vicarage, Forest Hill,
Kent.--2 engravings.

Designs for Iron Gates.--An engraving.

VI. ASTRONOMY.--A New Lunarian.--By Prof. C.W. MACCORD.
--With 3 figures.

VII. GEOLOGY.--Coal and its Uses.--By JAMES PYKE.--Formation
of carboniferous rocks and the coal in the same.--Processes of
nature.--Greatness of this country due to coal.--Manufacture of
gas.--Products of the same.

VIII. NATURAL HISTORY, BOTANY. ETC.--The Wine Fly.--The
egg.--Larva.--Pupa and fly.

The "Potetometer." an Instrument for Measuring the Transpiration
of Water by Plants.--1 figure.