periments in Binary Arithmetic. 6726

V. ARCHAEOLOGY.--Grecian Antiquities.--With engravings of the
Monument of Philopappus.--Tomb from the Ceramicus.--Tower
of the winds.--The Acropolis.--Old Corinth.--Temple of
Jupiter.--The Parthenon.--Temple of Theseus, etc. 6721

VI. NATURAL HISTORY, ETHNOLOGY, ETC.--Poisonous Serpents and
their Venom.--By Dr. Archie Stockwell.--A serpent's mouth,
fangs, and poison gland.--Manner of attack.--Nature of
the venom.--Action of venom.--Remedies. 6719

Ethnological Notes.--Papuans.--Negritos. 6720

VII. HORTICULTURE, BOTANY, ETC.--The Hornbeams.--Uses to
which the tree is put.--Wood for manufactures.--For
fuel.--Different varieties.--With engravings of the tree
as a whole, and of its leaves, fruit, flowers, etc. 6724

Fruit of Camellia Japonica.--1 engraving. 6725

VIII. MEDICINE. SANITATION, ETC.--House Drainage and Refuse.
Abstract of a lecture by Capt. Douglas Galton.--Treating
of the removal of the refuse from camps, small towns, and
houses.--Conditions to observe in house drains, etc. 6717

Pasteur's New Method of Attenuation. 6718

Convenient Vaults. 6719

IX. MISCELLANEOUS.--Spanish Fisheries.--Noticeable objects
in the Spanish Court at the late Fisheries Exhibition. 6722

Duck Shooting at Montauk. 6723

* * * * *

ELECTRICAL APPARATUS FOR MEASURING AND FOR DEMONSTRATION AT THE MUNICH
EXHIBITION.

Apparatus for use in laboratories and cabinets of physics were quite
numerous at the Munich Exhibition of Electricity, and very naturally a
large number was to be seen there that presented little difference
with present models. Several of them, however, merit citation. Among
the galvanometers, we remarked an apparatus that was exhibited by
Prof. Zenger, of Prague. The construction of this reminded us of that
of other galvanometers, but it was interesting in that its inventor
had combined in it a series of arrangements that permitted of varying
its sensitiveness within very wide limits. This apparatus, which Prof.
Zenger calls a "Universal Rheometer" (Fig. 1), consists of a bobbin
whose interior is formed of a piece