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Scientific American Supplement, No. 514, November 7, 1885   By:

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Scientific American Supplement. Vol. XX., No. 514.

Scientific American established 1845

Scientific American Supplement, $5 a year.

Scientific American and Supplement, $7 a year.


I. CHEMISTRY. Chlorides in the Rainfall of 1884. Apparatus for Evaporating Organic Liquids. With description and 3 figures.

II. ENGINEERING AND MECHANICS. Relative Costs of Fluid and Solid Fuels.

The Manufacture of Steel Castings.

Science in Diminishing Casualties at Sea. Extract of a paper read before the British Association by DON ARTURO DE MARCOARTER.

Improved Leveling Machine. 9 figures.

The Span of Cabin John Bridge.

Improvements in Metal Wheels. 3 figures.

Apparatus for the Production of Water Gas. 3 figures.

III. TECHNOLOGY. The Blue Print Process. R.W. JONES.

Reproductions of Drawings in Blue Lines on White Ground. By A.H. HAIG.

A Plan for a Carbonizing House. With full description and 5 figures.

The Scholar's Compasses.

The Integraph. With full description and engraving.

Apparatus for the Manufacture of Gaseous Beverages. 2 engravings.

Sandmann's Vinegar Apparatus. 1 figure.

Field Kitchens. 8 figures.

A New Cop Winding Machine. 3 figures.

The Preservation of Timber. Report of the Committee of the American Society of Engineers. The Boucherie process. Experiments. Decay of timber.

IV. PHYSICS, ELECTRICITY, LIGHT, ETC. Apparatus for Measuring the Force of Explosives. With engraving.

Lighting and Ventilating by Gas. Advantages of gas over electricity, etc. By WM. SUGG. 2 figures.

Ander's Telephone. 1 figure.

Brown's Electric Speed Regulator. 1 figure.

Magneto electric Crossing Signal. 2 figures.

The Chromatoscope. An aid to microscopy.

V. ART AND ARCHITECTURE. The Barbara Uttmann Statue at Annaberg, Saxony.

Improvements in Concrete Construction. Use of Portland cement. System of building in concrete invented by Messrs. F. & J.P. West, London.

Albany Buildings. Southport. An engraving.

VI. PHYSIOLOGY, HYGIENE, ETC. The Sizes of Blood Corpuscles in Mammals and Birds. A table.

The Absorption of Petroleum Ointment and Lard by the Skin.

VII. MISCELLANEOUS. The Missing German Corvette Augusta. With engraving.

The Tails of Comets. The effect by a disturbance of solar waves, and not by special matter.


The Roman tessellated pavement in Jewry Wall Street, Leicester, discovered in the year 1832, is well known to archaeologists; it has also been known as difficult of access, and hardly to be seen in a dark cellar, and, in fact, it has not been seen or visited, except by very few persons. Some time ago the Town Council resolved to purchase the house and premises, with the object of preserving the pavement in situ , and of giving additional light and better access to it, and, this purchase having been completed in the beginning of the present year, the work of improvement began. It was now seen that the pavement was continuous under the premises of the adjoining house, and under the public street, and arrangements were at once made to uncover and annex these adjoining parts, so as to permit the whole to be seen at one view. The pavement thus uncovered forms a floor which, if complete, would measure 23 feet square; it lacks a part on the west side, and also the entire south border is missing. It is a marvel of constructive skill, of variety and beauty in form and color, and not the least part of the marvel arises from the almost beggarly elements out of which the designer has produced his truly harmonious effects. No squared, artificially colored, or glazed tesseræ, such as we see in a modern floor, are used, but little pieces, irregularly but purposely formed of brick and stone... Continue reading book >>

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