essential for experimentation. The opening of this volume sets the stage for a deep dive into the physical tools and methods used in chemistry. Lavoisier begins by emphasizing the importance of practical knowledge in chemistry, arguing that descriptions of physical operations should not distract from the theoretical underpinnings of the discipline. He outlines the volume's organization, which includes a focus on the construction and usage of apparatus necessary for determining the properties of substances, such as weight and specific gravity. Lavoisier also foreshadows his discussions on gasses and their behavior under varying temperatures and pressures, signaling a systematic approach aimed at improving experimental accuracy and understanding in the field. (This is an automatically generated summary.)