"The Genesis of Fluid Mechanics 1640-1780" is a scholarly book that examines the development of fluid mechanics as a scientific discipline between the late 17th and the first half of the 18th century. It analyzes the evolution of fluid mechanics along two fundamental research directions: the problem of resistance and the problem of flow. This approach highlights the experimental aspect of research and illuminates its connection to practical issues, such as in ballistics, hydraulics, fluid-powered machines, and shipping theory. Unlike earlier studies that primarily view fluid mechanics from a mathematical perspective, this work also adopts an engineering viewpoint, documenting the efforts made to make the theory applicable in practice. This reflects the contemporary belief that the value of knowledge and skills was largely measured by their usefulness.