Siemens' Telemeter.--1 figure.--Siemens electric telemeter

Physics Without Apparatus.--Experiment in static electricity.--
1 figure

The Cascade Battery. By F. HIGGINS.--1 figure

Perfectly Lovely Philosophy

IV. ASTRONOMY, ETC.--The Comet as seen from the Pyramids
near Cairo, Egypt.--1 figure

Sunlight and skylight at High Altitudes.--Influence of the
atmosphere upon the solar spectrum.--Observations of Capt.
Abney and Professor Langley.--2 figures

How to Establish a True Meridian

V. MINERALOGY.--The Mineralogical Localities in and Around
New York City, and the Minerals Occurring Therein. By NELSON
H. DAKTON. Part III.--Hoboken minerals.--Magnesite.--Dolomite.
--Brucite.--Aragonite.--Serpentine.--Chromic iron--Datholite.
--Pectolite.--Feldspar.--Copper mines, Arlington, N.J.-Green
malachite.--Red oxide of copper.--Copper glance.--Erubescite

VI. ENTOMOLOGY.--The Buckeye Leaf Stem Borer

Defoliation of Oak Trees by _Dryocampa senatoria_ in Perry
County, Pa.