One of the most curious books of this kind was "A Voyage to Guinea, Brazil and the West Indies," published in London in the year 1735. Its author was John Atkins, surgeon of the Royal Navy, and though it contained an account of a trip made by him, it very plainly revealed an interest in the commerce of the countries visited and in the possibilities they offered, which, while natural in a business man, was quite surprising in a member of the medical fraternity. After devoting considerable space to the products of these southern lands, hurricanes, etc., he also discourses at length upon the slave-trade and gives interesting glimpses of the manner in which it was conducted. "To give dispatch," says he, "cajole the traders with Brandy," and continues: "Giving way to the ridiculous Humours and Gestures of the trading Negroes is no small artifice for success. If you look strange and are niggardly of your Drams, you frighten him. Sambo is gone, he never cares to treat with dry lips, and as the Expenses is in English Spirits of two Shillings a Gallon, brought partly for this purpose, the good Humour it brings them into, is found discounted in the sale of goods." Speaking of Cuba, he calls it a very pleasant and flourishing island, the Spanish building and improving for posterity without dreaming, as the English planters do, of any other homes. But he does not fail to add, "They make the best Sugars in the world." Another publication aiming more directly at the mariners and merchants of Great Britain is by one Caleb Smith, called on the title page, the inventor of the "New Sea Quadrant." It was printed in 1740 and was a translation of Domingo Gonzales Carranza's description of the coasts, harbors and sea-ports of the Spanish West Indies. In the curious preface he says: "The original was brought to England by a Sympathetic prisoner who had been in Havana where he procured it in manuscript and presented it to the Editor as a Testimony of his friendship and respect," and the dedication is addressed "to the Merchants of Great Britain, the Commanders of Ships, and others who were pleased to subscribe for this Treatise."