ble Prospecting Drill and Automatic Safety Gear shown at
the Inventions Exhibition.--With 2 engravings.

III. ELECTRICITY, ETC.--Electricity in Warfare.--By Lieutenant
B.A. FISKE, U.S.N.--Electrical torpedoes.--Torpedo
detecter.--Military telegraphy and telephony.--Electricity
for firing great guns.--Arrangement of wires for lights.--The
search light.--Incandescent lamps for sight
signaling.--Electrical launches.--An "electric sight".

Meucci's Claims to the Telephone.--With description of his
instrument and 10 figures.

An Electric Centrifugal Machine for Laboratories.--By ALEX.
WATT.--From paper read before the British Association.--1
figure.

Transmission of Power by Electricity.--Experiments of M.
MARCEL DEPREZ.

IV. ART AND ARCHITECTURE.--Quadriga for the New House of
Parliament at Vienna.--An engraving.

Glazed Ware Finial.--With engraving.

Hotel de Ville, St. Quentin.--With engraving.

Fire Doors in Mills.--From a lecture before the Franklin
Institute by C.J. HEXAMER.

V. NATURAL HISTORY, ETC.--Preservation of Insects.

An Accomplished Parrot.

The Roscoff Zoological Laboratory.--The buildings and
rooms.--The aquarium.--Course of study.

The Muraenae at the Berlin Aquarium.--With engraving.

Metamorphosis of Arctic Insects.

VI. MEDICINE. ETC.--A Year's Scientific Progress in Nervous and
Mental Diseases.--By Prof. L.A. MERRIAM.--Report to the
Nebraska State Medical Society.

Scaring the Baby Out.

VII. MISCELLANEOUS.--Wage Earners and their Houses.--Manufacturers
as landlords.--Experiments of Pullman, Owen, Peabody, and
others.

The Locked and Corded Box Trick, with Directions for making
the Box.--By D B. ADAMSON.--9 figures.

A Perpetual Calendar.--With engraving.

* * * * *

PRESERVATION OF INSECTS.

To remove the verdigris which forms upon the pins, the pinned insects
should be immersed in benzine and left there for a time; several hours is
generally long enough. The administration of this bath cannot be too
highly recommended for beetles which have been rendered unrecognizable by
grease, especially when dust has been mixed with the grease. This
immersion, of variable duration according to circumstances, will restore
to these insects, howeve