A Manual of British Vertebrate Animals: Or, Descriptions of All the Animals Belonging to the Classes Mammalia, Aves, Reptilia, Amphibia, and Pisces : Cambridge University Press : 9781108070034 : 1108070035 : 17 Jul 2014 : Widely respected by contemporaries for his work in natural history, Leonard Jenyns (1800-93) combined research with his duties as an Anglican clergyman. He published and lectured extensively on zoology and botany. Having recommended Darwin for the Beagle voyage, he later produced a paper, 'On the Variation of Species', which Darwin personally requested to see. This 1835 work catalogues five classes of vertebrates: mammals, birds, reptiles, amphibians and fish. Native, introduced and extinct species of the British Isles are included, with binomial and common names given, along with the dimensions and a description. An improvement on previous works which had overly relied on secondary sources, Jenyns's manual also provides information on location, diet and propagation