IN THE LATTER half of the sixth century BC, Croton was the site of the most famous medical school in Magna Graecia, where diseases of the human body were examined in a scientific and experimental manner instead of by using the contemporary supernatural, nearly magical concepts. Alcmaeon was one of the most active physicians interested in human physiology in the medical tradition of Croton. Although Alcmaeon was devoted to science and was a skillful experimentalist, little is known about his life and his exact birth date. The relative isolation of Alcmaeon from the great philosophical currents of his time probably facilitated his unprejudiced methodology and may have prevented him from disclosing his theories and demonstrating their value. He pioneered the concept of the relationship between the brain and the mind and was the first to identify the brain as the center of understanding and the essential organ for perceptions, sensations, and thoughts. Through systematic observations, Alcmaeon brought many things to light about the characteristics of the eye and the presence of channels connecting head sensory organs to the brain. He stated that the soul was immortal and introduced the tekmairesthai doctrine, through which the ideas of anamnesis and prognosis gave birth. We highlight his contributions to medical thought, and especially to neuroscience, which reveal Alcmaeon to be a thinker of considerable originality and one of the greatest philosophers, naturalists, and neuroscientists of all time.

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Medicine in the second half of the nineteenth century takes on some characteristics of modernity. These characteristics are worthy of our attention because they help us to understand better some of the current problems of hygiene and public health. One of the topics that was most discussed in the scientific-academic milieu of the second half of the nineteenth century was cremation. There was a poetic precedent: the cremation of Percy Bysse Shelley (1792-1822). The earliest apparatus to completely destroy the corpse was made in Italy and Germany in the 1870s. As far as hygiene was concerned, the reasons for cremation were not to pollute the water-bearing strata and an attempt to streamline the cemetery structure. As in an apparent schizophrenia, scientists of the day worked to both destroy and preserve corpses. There is also the unusual paradox that when the first cremations took place, the corpses were first preserved then to be destroyed later. The catholic world (mainly in Italy) and forensic scientists opposed cremation. It was left to the hygienists to spread the practice of cremation. An analysis of scientific literature shows us that if we leave out the related forensic and ethical problems, recent years have seen attention paid to any harmful emissions from crematoria equipment which have poured into the environment. Another issue is the assessment of inadvertent damage which may be caused by the condition of the corpse. Some topics, however, such as the need for preventive autopsies (first proposed in 1884 in Milan) are still a subject of debate, and seem to pass virtually unchanged from one generation to the next.

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Baldo Rossi (Pioltello, Milano, 1868 - Milano, 1932) fu chirurgo dell'Ospedale Maggiore di Milano a cavallo fra il secolo XIX e il secolo XX. Egli operò prima della diffusione dei sulfamidici, e può da un lato essere considerato fra gli ultimi chirurghi della vecchia guar- dia, quanto alla sua formazione universitaria, mentre dall'altro fu estremamente attento alla modernità e all'innovazione. Fu protagonista dei grandi sviluppi della chirurgia asettica, della traumatologia, dell'ortopedia, della chirurgia militare, della riabilitazione. Attraverso la sua ergobiografia si possono ripercorrere tappe fondamentali dello sviluppo dell'Ospedale Maggiore milanese. Nel saggio si sottolinea anche l'importanza di alcune fonti, quali i cataloghi della produzione industriale degli strumenti chirurgici, per la rico- struzione di avvenimenti della storia ospedaliera, ai quali Baldo Rossi diede fondamentali contributi.