ArgumentKeeping records has always been an essential part of science. Aside from natural history and the laboratory sciences, no other observational science reflects this activity of record-keeping better than astronomy. Central to this activity, historically speaking, are tools so mundane and common that they are easily overlooked; namely, the notebook and the pencil. One obvious function of these tools is clearly a mnemonic one. However, there are other relevant functions of paperwork that often go unnoticed. Among these, I argue, is (...) the strategic use made of different procedures of record keeping to prolong observational time with a target object. Highlighting this function will help us to appreciate the supporting role played by the notebook and the pencil to extend the observational time spent with a target object. With objects as delicate, faint, and mysterious as the nebulae, the procedures used to record their observations helped nineteenth-century observers overcome the temporal handicaps and limitations of large and clumsy telescopes, mounted in the altazimuth manner. To demonstrate the importance of paper and pencil, I will closely examine the observing books, the drawings found therein, and the telescopes of three nineteenth-century observers of the nebulae: Sir John F. W. Herschel, Lord Rosse, and William Lassell. (shrink)

ArgumentThe paper focuses on the instrumentality of writing in the context of scientific research. It is suggested that the tool-character of writing is related to specific writing procedures, such as the list. These procedures can vary in their degree of complexity and often follow rules that are not codified. In any case, writing procedures can be characterized as non-material devices of “concretion.” Two examples from the notebooks of the physicist and philosopher of science, Ernst Mach, will help to develop the (...) notion of writing procedures. Typical for Mach's use of his notebooks, they highlight the effects of writing in the context of reasoning and reflecting. (shrink)