Books about Science -- Periodicals (sorted by popularity)
- Scientific American Supplement, No. 488, May 9, 1885 Various 82 downloads
- Scientific American Supplement, No. 460, October 25, 1884 Various 82 downloads
- Lippincott's Magazine of Popular Literature and Science, Volume 20. December, 1877 Various 81 downloads
- Scientific American Supplement, No. 643, April 28, 1888 Various 81 downloads
- Scientific American Supplement, No. 520, December 19, 1885 Various 79 downloads
- Scientific American Supplement, No. 286, June 25, 1881 Various 79 downloads
- Scientific American Supplement, No. 1082, September 26, 1896 Various 77 downloads
- Scientific American Supplement, No. 467, December 13, 1884 Various 77 downloads
- Lippincott's Magazine of Popular Literature and Science, Volume 15, No. 85, January, 1875 Various 76 downloads
- Lippincott's Magazine of Popular Literature and Science, Volume 17, No. 097, January, 1876 Various 76 downloads
- Lippincott's Magazine of Popular Literature and Science, Volume 15, No. 87, March, 1875 Various 75 downloads
- Scientific American Supplement, No. 415, December 15, 1883 Various 75 downloads
- Appletons' Popular Science Monthly, December 1899 Various 74 downloads
- Scientific American Supplement, No. 401, September 8, 1883 Various 73 downloads
- Scientific American Supplement, No. 458, October 11, 1884 Various 73 downloads
- Scientific American Supplement, No. 455, September 20, 1884 Various 73 downloads
- Scientific American Supplement, No. 446, July 19, 1884 Various 73 downloads
- Scientific American Supplement, No. 794, March 21, 1891 Various 72 downloads
- Proceedings of the California Academy of Sciences, Volume III, 1863-1867 Various 72 downloads
- Scientific American Supplement, No. 717, September 28, 1889 Various 71 downloads
- Lippincott's Magazine of Popular Literature and Science, Vol. XVI., December, 1880. Various 71 downloads
- Scientific American Supplement No. 822, October 3, 1891 Various 71 downloads
- The Quarterly Journal of Science, Literature and the Arts, July-December, 1827 Various 70 downloads
- Lippincott's Magazine of Popular Literature and Science, Volume 11, No. 26, May, 1873 Various 70 downloads
- Scientific American Supplement, No. 299, September 24, 1881 Various 70 downloads