Before Hooke published his Micrographia (1665), and before Leeuwenhoek’s first letter to the Royal Society (1673), others had published on microscopy. The OU History of Science Collections has documented two more early users of the microscope. They were contemporaries of Galileo – fellow members of the Academy of the Lynx-Eyed – and they produced a document called the Apiarium:
The Apiarium (Rome, 1625) was a gift of the Lynx to the new pope. Galileo adapted the telescope into a new instrument, named a microscope by a member of the Lynx. In the Apiarium, the first publication of observations made with a microscope, Federico Cesi (1585-1630) and Francesco Stelluti (1577-1651) studied the anatomy of the bee.
Learn more about this document and find further links in the article: Earliest published microscopic study.
(Image from OU History of Science: Apiarium)