Portrait of Charles Robert Darwin (1809-1882) English naturalist and author of the Origin of Species aged about 65 years. He suggested that natural variation in a species creates a wide range of individual characteristics, some of which are more useful than others. The competition to survive in nature provides a driving force for evolution in the form of natural selection, a mechanism which weeds out those individuals possessing traits less suitable to the environment. The implications of his theory to man's own origins fuelled a bitter controversy with Christian orthodoxy. Black and white photograph 1874: coloured in 1995.
© SCIENCE PHOTO LIBRARY
'A. Jussieu', (1748-1836), 1830. Creator: Unknown
'A. Jussieu', (1748-1836), 1830. Antoine Laurent de Jussieu (1748-1836) French botanist and Parisian professor, the first to publish a natural classification of flowering plants based on extended unpublished work by his uncle Bernard de Jussieu. From "Biographical Illustrations", by Alfred Howard. [Thomas Tegg, R. Griffin and Co., J. Cumming, London, Glasgow and Dublin, 1830]
© The Print Collector/Heritage Images
Tri-Colored and Cup-Shaped Ixia Victorian Botanical Illustration
Extremely Rare, Beautifully Illustrated Antique Victorian Engraved Botanical Illustration of the Hand Colored Tri-Colored and Cup-Shaped Ixia, Corn Lily, from The American Flora, History of Plants and Wild Flowers: Their Scientific and General Descriptions, Natural History, Chemical and Medical Properties, Mode of Culture and Propagation. A Book of Reference for Botanists, Physicians, Florists, Gardeners and Students. Published in 1853. Copyright has expired on this artwork. Digitally restored.
© Craig McCausland