21. Hearder was an early advocate of the practicality of laying intercontinental submarine telegraph cables . 22. 1866-The first successful trans-Atlantic telegraph cable between England and the United States is completed. 23. Another invention of considerable value was a brake, employed in laying deep-sea telegraph cables . 24. He was among those supervising the laying of the first Transatlantic telegraph cable in 1858. 25. To be sure, computerization accelerated international financial dealings somewhat since the days of telegraph cables . 26. At this time Porthcurno was known world-wide as the British terminal of submarine telegraph cables . 27. Dogs carried messages; horses, mules and dogs were used to lay telephone and telegraph cables . 28. Krakatau was the first major disaster to occur after the laying of submarine telegraph cable . 29. Colt concentrated on manufacturing his waterproof telegraph cable , believing the business would prosper alongside Morse's invention. 30. The new company intended to lay the first deep-sea telegraph cable between Europe and North America.
