| title | creator | language | description | tableOfContents | contributor | subject | created |
| On the Origin of Species by Means of Natural Selection
or the Preservation of Favoured Races in the Struggle for Life. (2nd edition) | Darwin, Charles, 1809-1882 | en | | | | Evolution (Biology); Natural selection | 2007-09-25 |
| Natural Law in the Spiritual World | Drummond, Henry, 1851-1897 | en | | | | Religion and science; Natural theology | 2007-11-05 |
| My Studio Neighbors | Gibson, W. Hamilton (William Hamilton), 1850-1896 | en | | A familiar guest -- The cuckoos and the outwitted cowbird -- Door-step neighbors -- A queer little family on the bittersweet -- The welcome of the flowers -- A honey-dew picnic -- A few native orchids and their insect sponsors -- The milkweed. | | Natural history -- Outdoor books; Natural history | 2007-07-28 |
| The Western World
Picturesque Sketches of Nature and Natural History in North
and South America | Kingston, William Henry Giles, 1814-1880 | en | | | | Natural history -- North America; Natural history -- South America | 2008-02-28 |
| Chatterbox Stories of Natural History | Anonymous | en | | | | Children's poetry; Children's stories; Animals -- Juvenile literature; Natural history -- Juvenile literature; Nature stories | 2007-08-26 |
| Natural History of the Salamander, Aneides hardii | | en | | | | | 2010-02-09 |
| The Natural Philosophy of William Gilbert and His Predecessors | King, W. James | en | | | | | 2010-04-15 |
| The Romance of Natural History, Second Series | Gosse, Philip Henry | en | | | | | 2010-06-13 |
| Natural History of the Brush Mouse (Peromyscus boylii) in Kansas With Description of a New Subspecies | Long, Charles A. | en | | | | | 2010-02-09 |
| Essays in Natural History and Agriculture | Garnett, Thomas, 1799-1878 | en | | | | | 2006-05-02 |
| New observations on the natural history of bees | Huber, François, 1750-1831 | en | | | | | 2008-08-28 |
| A Discourse on the Study of the Law of Nature and Nations | Mackintosh, James, Sir, 1765-1832 | en | | | | International law; Natural law | 2009-07-11 |
| On the Advisableness of Improving Natural Knowledge | Huxley, Thomas Henry, 1825-1895 | en | | | | | 2001-11-01 |
| A Book of Natural History
Young Folks' Library Volume XIV. | | en | | | Jordan, David Starr, 1851-1931 [Editor] | | 2006-04-28 |
| Contributions to the Theory of Natural Selection
A Series of Essays | Wallace, Alfred Russel, 1823-1913 | en | | | | | 2007-08-29 |
| A Child's Primer Of Natural History | Herford, Oliver, 1863-1935 | en | | | | | 2008-08-16 |
| The Number "e" | | en | Natural Log to 1 million places | | | | 1994-04-01 |
| Natural History of the Bell Vireo, Vireo bellii Audubon | Barlow, Jon C. | en | | | | | 2010-06-17 |
| The Natural History of Selborne, Vol. 2 | White, Gilbert, 1720-1793 | en | | | Morley, Henry, 1822-1894 [Editor] | | 2007-03-29 |
| The Natural History of Selborne, Vol. 1 | White, Gilbert, 1720-1793 | en | | | Morley, Henry, 1822-1894 [Editor] | | 2007-03-29 |
| The Rural Life Problem of the United States
Notes of an Irish Observer | Plunkett, Horace Curzon, Sir, 1854-1932 | en | | | | Farm life; Natural resources | 2008-11-21 |
| Ceylon; an Account of the Island Physical, Historical, and
Topographical with Notices of Its Natural History, Antiquities and
Productions, Volume 1 | Tennent, James Emerson, Sir, 1804-1869 | en | | | | Sri Lanka; Natural history -- Sri Lanka | 2004-09-28 |
| Sketches of the Natural History of Ceylon | Tennent, James Emerson, Sir, 1804-1869 | en | | | | Animals -- Sri Lanka; Asiatic elephant -- Sri Lanka | 2004-08-29 |
| The Foundations of the Origin of Species
Two Essays written in 1842 and 1844 | Darwin, Charles, 1809-1882 | en | | | Darwin, Francis, Sir, 1848-1925 [Editor] | Natural selection; Evolution (Biology) | 2007-09-22 |
| The Botanic Garden. Part II.
Containing the Loves of the Plants. a Poem.
With Philosophical Notes. | Darwin, Erasmus, 1731-1802 | en | | | | Plants -- Poetry; Natural history | 2004-01-01 |