In his 1551 Travagliata invenzione, the Italian mathematician Niccolò Tartaglia described a device for raising sunken ships. Despite his claim of originality, his contemporary Girolamo Cardano had described a similar method in his famous work De subtilitate, which was published a year before. A comparison between these methods reveals the uniqueness of Tartaglia's approach, for he combines an explicit defence of the horror vacui principle with an implicit negation of rarefaction. In this article I show the complexities of this conception and stress the importance of keeping the personal argument between both authors in mind when interpreting their descriptions of wreck-salvage operations.

Vanished from history is the story of the ‘Mariner's Calculator’, invented and patented at the Great Seal Patent Office, London, by Mrs Janet Taylor, in 1834. Dismissed by the Admiralty, it had no commercial future and only one instrument is known to remain in existence. The article traces the invention from its inception and provides relevant biographical details of its inventor. The authors then analyse the assessment by the Admiralty to determine if it was fair and outline the endeavour in 2004 to reassess the achievement by a reconstruction of the Mariner's Calculator from its original patent.

The reorganization of the astronomical community during the late nineteenth and early twentieth centuries, due to the rise of astrophysics, was seen by some scientists as an opportunity to join an international community of prestigious researchers. This was the case of astronomers such as Josep Comas i Solà, who publicly argued with Eugène Michel Antoniadi during the first decades of the twentieth century about the veracity of astronomical observations and theoretical conclusions on Mars and Jupiter. Their priority claims and public disputes have to be understood in a new context that provided an exceptional opportunity for amateur and professional astronomers both to play an active role in the most interesting scientific debates of these years and to gain prestige, legitimacy and power.

By the turn of the twentieth century a distinct ‘social domain’ – along with its constituent parts, problems and internal dynamics – was turned into a political entity, and a concern for state bureaucracies existed across the industrializing world. Specific motivations for this trend may have varied from location to location, but included arguments for higher industrial productivity and less political discontent, often intertwined with a humanitarian impulse in calls for better housing, expanded public health or improved working conditions. As has been well documented, the politicization of the social domain in early twentieth-century Britain owes much to the consolidation of British sociology as a distinct discipline. Yet while the link between the rise of social politics and sociology has been established with regard to Britain, little has been said about the occurrence of this coupling elsewhere in the twentieth-century British Empire. This article aims to rectify that omission by showing the interplay between newly raised social concerns of the colonial administration in the Bombay Presidency, Western British India, and the establishing of sociological research within the borders of the Presidency around the time of the First World War. The article will explore how the colonial administration in Bombay planned to meet new demands for sociological knowledge in colonial state policy, how sociology was subsequently introduced into the Presidency as a research subject, and how new sociological methods were applied in actual colonial government.

This paper focuses on the role played by Domenico Marotta, director of the ISS (Higher Institute of Health) for over twenty-five years, in the development of twentieth-century Italian biomedicine. We will show that Marotta aimed to create an integrated centre for research and production able to interact with private industry. To accomplish this, Marotta shifted the original mission of the ISS, from public health to scientific research. Yet Mussolini's policy turned most of the ISS resources towards controls and military tasks, opposing Marotta's aspiration. By contrast, in the post-war years Marotta was able to turn the ISS into the most important Italian biomedical research institution, where research and production fruitfully cohabited. Nobel laureates, such as Ernst Chain, and future Nobel laureates, such as Daniel Bovet, were hired. The ISS built up an integrated research and production centre for penicillin and antibiotics. In the 1960s, Marotta's vision was in accord with the new centre-left government. However, he pursued his goals by ruling the ISS autocratically and beyond any legal control. This eventually led to his downfall and prosecution. This also marked the decline of the ISS, intertwined with the weakness of the centre-left government, who failed to achieve structural reforms and couple the modernization of the country with the democratization of its scientific institutions.