SCIENTIFIC AMERICAN SUPPLEMENT NO. 421
NEW YORK, JANUARY 26, 1884
Scientific American Supplement. Vol. XVII., No. 421.
Scientific American established 1845
Scientific American Supplement, $5 a year.
Scientific American and Supplement, $7 a year.
| TABLE OF CONTENTS. |
|---|
| I. |
ENGINEERING AND MECHANICS.—Furcot's Six Horse Power Steam Engine.—With several figures. |
6714 |
|
Foot Lathes.—With engraving. |
6715 |
|
Endless Trough Conveyer.—2 engravings. |
6715 |
|
Railroad Grades of Trunk Lines. |
6715 |
|
English Express Trains.—Average speed, long runs, etc. |
6715 |
|
Apparatus for Separating Substances Contained in the Waste Waters of Paper Mills, etc.—2 figures. |
6717 |
| II. |
TECHNOLOGY.—An English Adaptation of the American Oil Mill.—Description of the apparatus, and of the old and new processes.—Several engravings. |
6716 |
|
Large Blue Prints.—By W.B. Parsons, Jr. |
6717 |
| III. |
ELECTRICITY, ETC.—Electrical Apparatus for Measuring and for Demonstration at the Munich Exhibition.—With descriptions and numerous illustrations of the different machines. |
6711 |
|
A New Oxide of Copper Battery.—By F. De Lalande and S. Chaperon.—With description and three illustrations. |
6714 |
| IV. |
MATHEMATICS, ETC.—To Find the Time of Twilight.—1 figure. |
6720 |
|
A New Rule for Division in Arithmetic. |
6725 |
|
Experiments in Binary Arithmetic. |
6726 |
| V. |
ARCHÆOLOGY.—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 of copper, whose edges do not meet, and which is connected by strips of copper with two terminals. This internal shell is capable of
