Biologists 17th century
Marcello Malpighi was an Italian biologist, anatomist and physician, professor of logic, theoretical and practical medicine, and a member of the Royal Society of London.
After graduating from the University of Bologna with the degree of Doctor of Medicine and Philosophy, Malpighi soon took up a professorship there, then taught at the universities of Pisa and Messina. At the same time as teaching, he conducted biological research with his microscopes, which was an innovation in those days. In 1661, he identified and described the pulmonary and capillary network connecting small arteries to small veins, one of the most important discoveries in the history of science. He also isolated taste buds and regarded them as nerve endings, described the minute structure of the brain, the optic nerve, and in 1666 was the first to see red blood cells and attribute to them the color of blood. His treatise De polypo cordis (1666) explained the composition of blood and how it coagulates.
During his medical practice, Malpighi studied microscopic sections of the liver, brain, spleen, kidneys, and the bone and deep layers of skin that now bear his name. In his landmark 1673 work on the embryology of the chicken, the scientist concluded that the embryo forms in the egg after fertilization. In 1675-79 he also made extensive comparative studies of the microscopic anatomy of several different plants and saw analogies between plant and animal organisms. The Royal Society of London published two volumes of his botanical and zoological works in 1675 and 1679. His Anatome Plantarum is richly decorated with engravings by Robert White.
After his house was burned and looted by his adversaries, in 1691 Pope Innocent XII invited him to Rome as papal personal physician, which was a great honor.
Malpighi can be considered the first histologist. For almost 40 years he used the microscope to describe the main types of plant and animal structures and thus marked for future generations of biologists the main directions of research in botany, embryology, human anatomy and pathology. The conflict between ancient ideas and modern discoveries continued throughout the seventeenth century. Malpighi was convinced that microscopic anatomy, by showing the minute structure of living things, questioned the value of the old medicine. He laid the anatomical foundation for the subsequent understanding of human physiological exchanges.
Jan Swammerdam was a Dutch naturalist and biologist, anatomist and microscopist.
Swammerdam graduated from the Faculty of Medicine at Leiden University, then studied in Paris, earning a doctorate in medicine, and devoted himself exclusively to microscopic research. He used a single-lens microscope to study insect anatomy, and accurately described and illustrated the life history and anatomy of many species. His observations of their development allowed him to divide insects into four major divisions according to the degree and type of metamorphosis. His greatest contribution to biology was to understand insect development and to demonstrate that the same organism persists through different stages.
Jan Swammerdam wrote a voluminous work entitled A General History of Insects (1669) and The Bible of Nature (1737-1738), one of the finest collections of microscopic observations ever published. Considered the most accurate of the classical microscopists, he was the first to observe and describe erythrocytes in 1658.
Swammerdam was also a recognized anatomist: in 1670 he was granted the privilege of dissecting human bodies in Amsterdam, which at the time required a special license available only to a limited number of researchers. He developed a new dissection technique and also designed several new instruments.
Antonio Vallisneri the Elder was an Italian naturalist, physician and geologist, collector, and member of the Royal Society of London.
He studied in Bologna, Venice, Padua and Parma and headed the chair first of practical medicine and then of theoretical medicine at the University of Padua. In addition to medicine, Vallisneri conducted important research in the natural sciences. In particular, in the field of geology, he is credited with recognizing the organic nature of fossils unrelated to the Great Flood, which contributed to the end of centuries-old disputes. His observations on the water cycle, thermal waters and some mines in the Apennines were also important.
Vallisneri was interested in all branches of the natural sciences, collecting numerous collections of animals, minerals, and other natural objects during his lifetime. The scientist compiled a brief catalog of his collection, which was published in 1733 by his son, Antonio Vallisneri, Jr. The Vallisneri Museum included naturalistic finds, anatomical preparations, medical and scientific instruments, antiques, and exotics from various cultures and eras as well as geographical origins. In 1734, his son donated this museum to the University of Padua, initiating the creation of a general museum for the university.
Antonio Vallisneri Jr. followed in his father's footsteps and for many years held the position of professor of natural history at the University of Padua. He devoted his life to collecting and processing his father's writings and tidying up his library, which contained about a thousand volumes. These were donated to the University Library in Padua.
Antonie Philips van Leeuwenhoek was a Dutch microbiologist and microscopist in the Golden Age of Dutch science and technology. A largely self-taught man in science, he is commonly known as "the Father of Microbiology", and one of the first microscopists and microbiologists. Van Leeuwenhoek is best known for his pioneering work in microscopy and for his contributions toward the establishment of microbiology as a scientific discipline.