It was also during the 18th century that an English author and botanist, John Hill, concluded nasal cancer could develop with the use of snuff; under the guise of a doctor, he reported five cases of 'polyps, a swelling in the nostril adherent with the symptoms of open cancer'. Modern studies, however, have concluded there is no conclusive evidence of a relationship with nasal snuff-taking and cancer. In Victorian era Britain, a few miracle "snake oil" claims on the health or curative benefits of certain snuff types surfaced in publications. For instance, a London weekly journal called "The Gentlewoman" advised readers with ailing sight to use the correct type of Portuguese snuff, "whereby many eminent people had cured themselves so that they could read without spectacles after having used them for many years".