The telegraph embodies a communications revolution of…

The telegraph embodies a communications revolution of enormous impact.

One John Tawell is apprehended following the use of a needle telegraph message from Slough to Paddington on January 1, 1845.

This is thought to be the first use of the telegraph to catch a murderer.

The message is: A murder has just been committed at Salt Hill and the suspected murderer was seen to take a first class ticket to London by the train that left Slough at 7:42pm.

He is in the garb of a Kwaker with a brown great coat on which reaches his feet.

He is in the last compartment of the second first-class carriage.

The reason for the misspelling of 'Quaker' is that the British system does not support the letter Q.