Improved Gas Engine.--With engraving 6440

Meters for Power and Electricity. By M. C. VERNON BOYS.--A

valuable and instructive paper.--Showing the object of

meters, the way in which some of them are made, and their

manner of operating.--Several figures 6440

Raising and Moving Masonry Buildings.--With full page of

engravings, illustrating various examples of large buildings

composed of masonry that have been moved and raised 6443

III. TECHNOLOGY.--Filter for Industrial Works.--Showing how to

make and use the filter.--With engraving 6443

The Val St. Lambert Glass Works.--With full description and

two illustrations 6444

Proper shoeing.--Horses' feet should be treated in

accordance with the work expected of them 6444

Scientific American, September 29, 1883 Supplement. No. 404 · 第 62 / 75 题