GALATHEAU, Dissertation sur la Digestion de l'Estomach, 1675

First edition of this scarce work of gastroenterology.
Not in the usual bibliographies (Osler, Heirs, Waller, Cole, Morton, Dezeimeris, ......).
Portal in his dictionary of anatomy (1770) mentions an edition of 1676. He says of this work that it is not very interesting, Galatheau following the system of Willis on digestion.

Traces of this work can also be found in the correspondence of Pierre Bayle:
"There is a doctor from Bourdeaux named Mr Galatheau who I was told was from Religion, who had a Treatise on Digestion printed foods where he fights the opinion of the moderns who want it to be done by an acid humor whose sharp parts do what strong water produces in metals."

Neither his peers nor posterity have been kind to Pierre de Galatheau, however we note on page 13 of his treatise that he uses a microscope to observe the mucous membrane of the stomach:
"the pores of this part are larger and more dilated than the others, as the microscope shows..."
A completely innovative process since Leeuwenhoek's first microscopic observations were only presented to the Royal Society in 1673.