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Scientific American Magazine Vol 101 Issue 11

Scientific American Magazine

Volume 101, Issue 11

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Features

The Transatlantic Record

Economic Loss of Overcrowding

The Elimination of Grade Crossings

Dr. Cook and the North Pole

Electricity

Science

Engineering

Counting Our People by Machine

M. Hamilton Talbot

How Sudd Chokes the Nile River

Day Allen Willey

The Recent Curious Eclipse of the Sun

The Seven Bridges of Königsberg and Other Puzzles

J. F. Springer

Termination of the Rheims Aviation Meeting

A Novel Cantilever Grain Elevator

Dr. Cook's Discovery of the North Pole

Departments

Correspondence

Patents

Index of Inventions

Recently Patented Inventions

Notes and Queries

New Books, Etc.