The first coffee-house in London was started in St. Michael's Alley, Cornhill, in 1652 (when coffee was seven shillings a pound); the first tea-house was opened in Exchange Alley in 1657 (when tea was five sovereigns a pound), and in the same year a Frenchman opened the first chocolate house in Queen's Head Alley, Bishopsgate Street (with chocolate at ten to fifteen shillings per pound). With the exception of J. Wadsworth's translation of Antonio de Ledesma Cornero's Spanish treatise on chocolate, originally published in Madrid in 1631, The Indian Nectar was the first comprehesive treatise on chocolate in English. Its author, Henry Stubbs, was an accomplished Greek scholar, physician, intimate friend of Hobbes, author of numerous works, directing many of them before the Restoration against the royalists, and between 1657-59 second keeper of the Bodleian library. Stubbs took the oath of allegiance at the Restoration, and in 1661 went to Jamaica as King's physician. His work on chocolate was published before his return in 1665, when he went on to pursue an extensive medical practice in Warwick and Bath.