The air we breathe a popular account of air, its composition, functions and impurities, [18--?]
A popular science book on air, its composition, functions and impurities, written by chemist Edmund Albert Letts, probably in the late nineteenth century, for general readers. Its two plates are photographs of a glass collecting tube for sampling air and a rotated engraved view of a laboratory with apparatus on a bench, useful to designers wanting period scientific equipment and dark-ground object photography.
![Picture 1 of 2 from The air we breathe a popular account of air, its composition, functions and impurities, [18--?], leaf 261](https://img.insideoutlibrary.com/img/200/ia-airwebreathe00lett-261-0.webp)
![Picture 2 of 2 from The air we breathe a popular account of air, its composition, functions and impurities, [18--?], leaf 301](https://img.insideoutlibrary.com/img/200/ia-airwebreathe00lett-301-0.webp)