For the Week ending August 10, 1878.

I. ENGINEERING AND MECHANICS.—The Manufacture of Wrought Iron Pipe. Bending the Sheets. Welding the Tube. Manufacture of Gas Pipe. Polishing and Smoothing. 4 figures.

Improved Marine Engine Governor. 1 figure.—Improved Screw Steering Apparatus. 3 figures.—West's Reversing Gear. 1 figure.—Engineering in Peru. The Oroya Railroad over the summit of the Andes. A remarkable engineering feat. The famous Cerro de Pasco Silver Mines. Extensive Coal Fields.

II. TECHNOLOGY.—Coal Ashes as a Civilizer. Grading. Coal Ashes as a Fertilizer.—Utilization of the Waste Waters of Fulling Mills and Woolen Works.—Suggestions in Decorative Art. Marquetry Ornaments from Florence. 3 illustrations.

Useful Recipes. By J. W. Parkinson. Cream cake. Kisses. Apples a la Tongue. Mead. Bread without yeast. Biscuit. Doughnuts. Glaire of Eggs. Crumpets. Ratafia de Framboises. Ratafia de Cerises. To color sugar sand. Raspberry and currant paste. Cheese cake. Cocoanut macaroons. Orange slices. Ice cream. Fruit juices. Lady fingers. White bride cake. Scalloped clams. Iced souffle. Sugar for crystal work. To restore the fragrance of oil of lemon. Family bread.

III. FRENCH INTERNATIONAL EXPOSITION OF 1878.—Tobacco at the Exhibition. Manufacture of snuff. The two processes of fermentation. The grinding. The packing of the snuff. Manufacture of chewing tobacco, etc.

New Cutting Apparatus for Reapers. 1 figure.—The Algerian Court. 1 illustration.—The French Forest Pavilion. 1 illustration.

IV. CHEMISTRY AND METALLURGY.—A Reducing Agent.—Climbing Salts.—Chloride of Lime.—Action of Watery Vapor.—The Active Principles of Ergot.—Cadaveric Alkaloids.

Outlines of Chemistry. By Henry M. McIntire.

V. ARCHITECTURE AND BUILDING.—A Cottage Costing $150. By S. B. Reed, Architect. Plans for cheap summer residence for family of four persons. Dimensions, construction, and estimate for all materials and labor, with 6 figures.—Buildings in Glass. Improved method of constructing conservatories, 2 figures.—Buildings and Earthquakes. On structures in an earthquake country. By John Perry and W. E. Ayrton, Japan. Also a new Seismometer for the measurement of earthquakes.

VI. NATURAL HISTORY, GEOLOGY, ETC.—Colors of Birds and Insects.—Microscopy. Minute and low forms of life. Poisonous Caterpillar. Sphærosia Volvox. An Australian Polyzoon.

A Chinese Tornado.

VII. MEDICINE AND HYGIENE.—Nervous Exhaustion. By George M. Beard, M.D. Symptoms continued. Mental depression with timidity; morbid fear of special kinds; headaches; disturbances of the nerves and organs of special sense; localized peripheral numbness and hyperæsthesia; general and local chills and flashes of heat; local spasms of the muscles. Suggestions and treatment. Electricity. Application of cold; kind of food; exercise; medicines.

The Art of Preserving the Eyesight. V. From the French of Arthur Chevalier. Presbyopy, or long sight. Symptoms. Causes. Artificial light. Franklin's spectacles. Spectacles for artists. Hygiene for long sight, and rules. Myopy, or short sight. Dilation of pupil, and other symptoms of myopy. Glass not to be constantly used in myopy. How to cure slight myopy. Choice of glasses. Colored glasses for short sight. False or distant myopy, and glasses t o be used, 5 figures.

VIII. MISCELLANEOUS.—The Repair of the Burned Models after the Patent Office Fire of 1877. By George Dudley Lawson. An interesting description of the importance and difficulty of the work, and the enterprise and care shown. Reconstructing complicated models from miscellaneous fragments.

Verneuil, Winner of the Ascot Cup, 1 illustration.

Price 10 cents. To be had at this office and of all newsdealers.