John Edward Gray wrote nearly 500 papers, including many descriptions of species new to science. These had been presented to the Museum by collectors from around the world, and included all branches of zoology, although Gray usually left the descriptions of new birds to his younger brother and colleague George. Gray was also active in malacology, the study of molluscs. John Edward Gray was buried at St Mary's Church, Lewisham. Gray was one of the most prolific taxonomists in the history of zoology. He described more than 300 species and subspecies of reptiles, only surpassed by his successors at the British Museum, George
Tree of Science (Ramon Llull) Tree of Science (Ramon Llull) Tree of Science (Arbre de la ciència, Arbor Scientiae) is one of the most extensive and characteristic works of Ramon Llull, written in Rome between 1295 and 1296. It is a version in encyclopaedia format of General Art or "Ars magna" aimed to non university public. It has recourse to an analogy common in it: the organic comparison, in which each science is represented by a tree with roots, trunk, branches, leaves and fruits. The roots represent the basic principles of each science; the trunk is the structure; the branches, the genres; the leaves, the