Scottish inventions and discoveries solely to the subject, as well as scores of websites listing Scottish inventions and discoveries with varying degrees of science. Even before the Industrial Revolution, Scots have been at the forefront of innovation and discovery across a wide range of spheres. Some of the most significant products of Scottish ingenuity include James Watt's steam engine, improving on that of Thomas Newcomen, the bicycle, macadamisation (not to be confused with tarmac or tarmacadam), Alexander Graham Bell's invention of the first practical telephone, John Logie Baird's invention of television, Alexander Fleming's discovery of penicillin and insulin. The following is a list of
Invention of the telephone later introduced by Bell Telephone instead canceled sidetone through a feedback process. An American District Telegraph (ADT) laboratory reportedly lost some of Meucci's working models, his wife reportedly disposed of others and Meucci, who sometimes lived on public assistance, chose not to renew his 1871 "teletrofono" patent caveat after 1874. A resolution was passed by the United States House of Representatives in 2002 that said Meucci did pioneering work on the development of the telephone. The resolution said that "if Meucci had been able to pay the $10 fee to maintain the caveat after 1874, no patent could have been