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 Munchausen's trumpet) is found in the Natural Magick of John Baptista Porta, the celebrated Neapolitan philosopher, and published at London in 1658. He proposes to confine the sound of the voice in leaden pipes, such as are used for speaking through; and he goes on to say that 'if any man, as the words are spoken, shall stop the end of the pipe, and he that is at the other end shall do the like, the voice may be intercepted in the middle, and be shut up as in a prison, and when the mouth is opened, the voice will come forth as out of his mouth that spake it. … I am now upon trial of it. If before my book be printed the business take effect, I will set it down; if not, if God please, I shall write of it elsewhere.' Porta also refers to the speaking head of Albertus Magnus, whom, however, he discredits. He likewise mentions a colossal trumpeter of brass, stated to have been erected in some ancient cities, and describes a plan for making a kind of megaphone, 'wherewith we may hear many miles.'

In the Voyage à la Lune of De Cyrano Bergerac, published at Paris in 1650, and subsequently translated into English, there is a long account of a 'mechanical book' which spoke its contents to the listener. 'It was a book, indeed,' says Cyrano, 'but a strange and wonderful book, which had neither leaves nor letters,' and which instructed the Youth in their walks, so that they knew more than the Greybeards of Cyrano's country, and need never lack the company of all the great men living or dead to entertain them with living voices. Sir David Brewster surmised that a talking machine mould be invented before the end of the century. Mary Somerville, in her Connection of the Physical Sciences, wrote some fifty years ago: 'It may be presumed that ultimately the utterances or pronunciation of modern languages will be conveyed, not only to the eye, but also to the ear of posterity. Had