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Structural Continued.

The Paradox of the Pantheon.* (14) Sept. 20.
Complicated Underpinning.* (14) Sept. 27.

Discussion of Standard Specifications for Steel Forgings and Castings. Gus.C. Henning. (Before Amer. Inst. of Min. Engrs.) (62) Oct. 2.

An Adjustable Mold for Making Concrete Building Blocks.
The Philadelphia Company's Building, Pittsburg.

(13) Oct. 2.

(14) Oct. 4.

The Manufacture of the New Fireproof Material Uralite.* (46) Oct. 4.
Essais du Fer et de l'Acier au Moyen des Barreaux Entaillés. Rudeloff. (37) Aug.
Formules pour les Parois et Hauteur Économique des Poutres Droites. Ferdinand
Hofer. (36) Serial beginning Aug. 25.

Topographical.

Rapid Base Line Measurement for the Ninety-Eighth Meridian Triangulation.* (14) Sept. 27.

Water Supply.

Rotative Pumping.* John Richards. (1) Aug.

Water Power Transmission for the Springfield, Mass., Lighting System.* (27) Sept. 6. Sand Washers for the Slow Sand Filters of Mt. Vernon, N. Y. (13) Sept. 11.

The San Leandro Earth Dam of the Oakland Water-Works (125 ft. high).* Burr Bassell. (13) Sept. 11.

The New Power Plant at Sault Ste. Marie.* (18) Sept. 18.

Notes on the History of Turbine Development in America. A. C. Rice, M. Am. Soc. C. E. (13) Sept. 18.

Fair, Just and Reasonable Water Rates. (14) Sept. 20.

Notes on Irrigation Engineering (14) Sept. 20.

The Nile Irrigation Works. (46) Sept. 20.

The Largest Electric Water Power Station in New England.* (27) Sept. 20.

The Water-Power Plant of the Michigan-Lake Superior Power Co., at Sault Ste. Marie.* (13) Sept. 25.

Report on Water-Works Rates and Valuation at San Antonio, Tex. (13) Sept. 25.

An Engineering Commission on the Artesian Wells of the Memphis Water-Works. (13) Sept. 25.

Electric Power Transmission and Supply in Switzerland.*

Sept. 26.

(12) Serial beginning

Single-Phase Pumping Plant at Hammersmith.* (26) Sept. 26. A List of Failures of American Dams. W. R. Hill, M. Am. Soc. C. E. (From Presidential Address before the Amer. W. W. Assoc.) (14) Sept. 27.

The Sault Ste. Marie Water Power. Frank C. Perkins. (27) Sept. 27.

The Prevention of Electrolysis of Gas and Water Pipes in Great Britain. (13) Oct. 2. Laying Pipe under Water and Submerged Suction Maius. A. L. Holmes. (Abstract of paper read before the Central States W. W. Assoc.) (13) Oct. 2; (14) Oct. 4.

A Concrete Power Dam at Middle Falls, N. Y. (14) Oct. 4.

Nouvelle Disposition pour Usines-Barrages.* Michel Berthier. (33) Sept. 6.

Waterways.

The Materials for the Concrete of the Buffalo Breakwater.* Emile Low, M. Am. Soc. C. E. (13) Sept. 11.

Reconstruction of the Lake Winnibigoshish Dam.* (14) Sept. 18.

The Oneida Route for a Barge Canal vs. The Seneca-Oneida Mohawk Route. T. W. Symons. (13) Oct. 2.

*Illustrated.

AMERICAN SOCIETY OF CIVIL ENGINEERS.

INSTITUTED 1852.

PAPERS AND DISCUSSIONS.

This Society is not responsible, as a body, for the facts and opinions advanced in any of its publications.

AN ALTERNATIVE LINE FOR THE NICARAGUA
CANAL; AND A PROPOSED NEW METHOD
OF DAM CONSTRUCTION.

By J. FRANCIS LE BARON, M. Am. Soc. C. E.

TO BE PRESENTED NOVEMBER 19TH, 1902.

1. AN ALTERNATIVE LINE FOR THE NICARAGUA CANAL.

The importance of good harbors for the termini of the Nicaragua Canal is so great that we could well afford to sacrifice several less favorable features to secure them.

On the Pacific side, Brito seems to be the only available terminus, and a harbor will have to be constructed there.

On the Atlantic side, however, there is more choice; but, strange to say, only one location for the harbor has been proposed. This appears all the more strange when the fact is considered that Greytown Harbor was ruined nearly forty years ago by the sand drift from the east, and the whole bight of the coast in which Greytown is situated is in a state of unstable equilibrium, and has been from remote geological periods. This is shown conclusively by the succession of lagoons, five in number, beginning with Silico and ending with the

NOTE. These papers are issued before the date set for presentation and discussion. Correspondence is invited from those who cannot be present at the meeting, and may be sent by mail to the Secretary. Discussion, either oral or written, will be published in a subsequent number of Proceedings, and, when finally closed, the papers, with discussion in full, will be published in Transactions.

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