"Pumps and Hydraulics, Part 2 (of 2)" by N. Hawkins is a scientific publication written in the early 20th century. This comprehensive text delves into various aspects of pumps and hydraulic systems, providing in-depth discussions and technical details tailored for engineers, millwrights, and those involved in mechanical disciplines. The book encompasses a wide range of topics, including air pumps, steam pumps, compressors, and more, making it a rich resource for professionals seeking to enhance their understanding of hydraulics. At the start of the volume, the author provides a preface that emphasizes the importance of clear written communication in technical matters. It outlines the book’s structure, which is organized logically to facilitate learning for the average engineer. The beginning introduces fundamental concepts such as pneumatics and hydro-pneumatics, detailing properties of air and fluids and their applications in mechanical practices. Also shared are insights into the mechanics of air pumps, the role of pressure, and the intriguing functionality of various pump types, laying a solid foundation for the technical discussions to follow. (This is an automatically generated summary.)