This book came about as a result of a review I had written earlier on fea- tures of cellular changes occurring during anuran metamorphosis. Only a limited treatment of this subject was possible in such a circumscribed work and only specific examples of organic change were dealt with. Thus the sins of omission weighed heavily, for so much information could not be included to provide a more comprehensive and authenticated account of the elaborate, complex, and far-reaching changes that an aquatic larva undergoes to become a terrestrial froglet. A good deal of my working life has been spent...

A striking and famous feature of the English landscape, Dartmoor (in the southwest of the country) is a beautiful place, with a sense of wildness and mystery. But in the Middle Ages intensive practical use was made of its resources: its extensive moorlands provided summer pasture for thousands of cattle from the Devon lowlands, which flowed in a seasonal tide, up in the spring and down in the autumn.

This book describes, for the first time, the social organization and farming practices associated with that annual transfer of livestock. It presents evidence for a previously unsuspected...

This book came about as a result of a review I had written earlier on fea tures of cellular changes occurring during anuran metamorphosis. Only a limited treatment of this subject was possible in such a circumscribed work and only specific examples of organic change were dealt with. Thus the sins of omission weighed heavily, for so much information could not be included to provide a more comprehensive and authenticated account of the elaborate, complex, and far-reaching changes that an aquatic larva undergoes to become a terrestrial froglet. A good deal of my working life has been spent...