"We've been getting word from back home along the semaphore lines.

This is a copy sent over the semaphore line.

In most of these countries, the postal authorities operated the semaphore lines.

The semaphore line in France is superseded by the telegraph.

The semaphore line to the University wasn't finished.

To speed up transmission and to provide some semblance of security a code book was developed for use with semaphore lines.

Semaphore lines were a precursor of the electrical telegraph.

By 1824, the Chappe brothers were promoting the semaphore lines for commercial use, especially to transmit the costs of commodities.

By 1822 the fort was the site of a semaphore station on the semaphore line from London to Portsmouth.

Robert Hooke invents the semaphore line.

As a result of competition from the electrical telegraph, Europe's last commercial semaphore line in Sweden was abandoned in 1880.

In 1824 Ignace Chappe attempted to increase interest in using the semaphore line for commercial messages, such as commodity prices; however, the business community resisted.

An experimental semaphore line between the Admiralty and Chatham was installed in July 1816, and its success helped to confirm the choice.

Visual techniques such as smoke signals, beacon fires, hydraulic telegraphs, ship flags and semaphore lines were the earliest forms of optical communication.

Historically, "wireless" technologies have ranged from smoke signals and talking drums to the heliograph, semaphore line, and flag semaphore.

The Admiralty Shutter Telegraph Line had a semaphore line station at Chalton.

Claude Chappe successfully demonstrates the first semaphore line, between Paris and Lille, constituting an optical telegraph.

An old semaphore tower, relief of the former Landau (and later Strasbourg) to Paris semaphore line, can be seen in the vicinity.

In Canada, Prince Edward, Duke of Kent established the first semaphore line in North America.

The clacks, a semaphore system used to send what amount to telegrams (see Semaphore line), first seen in The Fifth Elephant.

In 1794 the semaphore line informed Parisians of the capture of Condé-sur-l'Escaut from the Austrians less than an hour after it occurred.

But the real advance for conveying long range dispatches came in the form of an ingenious optical Telegraph Semaphore line invented by Claude Chappe.

Semaphore railway station was 14.9 km from Adelaide Railway Station and on the end of the Semaphore line.

In 1792, Claude Chappe, a French engineer, built the first fixed visual telegraphy system (or semaphore line) between Lille and Paris.

Sprogø was a station for the semaphore line across the Belt, Storebæltstelegrafen, between Nyborg and Korsør, in operation between 1801 and 1865.