DigiCat Publishing presents to you this special edition of "On the Origin of Clockwork, Perpetual Motion Devices, and the Compass" by Derek J. de Solla Price. DigiCat Publishing considers every written word to be a legacy of humankind. Every DigiCat book has been carefully reproduced for republishing in a new modern format. The books are available in print, as well as ebooks. DigiCat hopes you will treat this work with the acknowledgment and passion it deserves as a classic of world literature.

This book is one of the many Islamic publications distributed by Talee throughout the world in different languages with the aim of conveying the message of Islam to the people of the world. Talee (www.talee.org) is a registered Organization that operates and is sustained through collaborative efforts of volunteers in many countries around the world, and it welcomes your involvement and support. Its objectives are numerous, yet its main goal is to spread the truth about the Islamic faith in general and the Shi`a School of Thought in particular due to the latter being misrepresented, misunderstood and its tenets often assaulted by many ignorant folks, Muslims and non-Muslims.Organization's purpose is to facilitate the dissemination of knowledge through a global medium, the Internet, to locations where such resources are not commonly or easily accessible or are resented, resisted and fought! In addition, Talee aims at encouraging scholarship, research and enquiry through the use of technological facilitates. For a complete list of our published books please refer to our website (www.talee.org) or send us an email to [email protected]

"John Wilmerding focuses on three turning points - around 1800, when America began to find its identity as a republic; 1850, a self-confident period of prosperity and growth; and 1900, a time of anxiety over profound changes in the psychological as well as the physical dimension. The author provides stimulating discussions of the great works of these three periods - from Thomas Jefferson's Monticello and Charles Willson Peale's Staircase Portrait to Thoreau's Walden and George Caleb Bingham's Fur Traders Descending the Missouri to The Education of Henry Adams and the late paintings of Thomas Eakins and Winslow Homer - finding common threads and complementary expressions in the images that writers and visual artists alike drew upon to convey the mood and vision of each distinctive era."--BOOK JACKET.

Migration, broadly defined as directional movement to take advantage of spatially distributed resources, is a dramatic behaviour and an important component of many life histories that can contribute to the fundamental structuring of ecosystems. In recent years, our understanding of migration has advanced radically with respect to both new data and conceptual understanding. It is now almost twenty years since publication of the first edition, and an authoritative and up-to-date sequel that provides a taxonomically comprehensive overview of the latest research is therefore timely. The emphasis throughout this advanced textbook is on the definition and description of migratory behaviour, its ecological outcomes for individuals, populations, and communities, and how these outcomes lead to natural selection acting on the behaviour to cause its evolution. It takes a truly integrative approach, showing how comparisons across a diversity of organisms and biological disciplines can illuminate migratory life cycles, their evolution, and the relation of migration to other movements. Migration: The Biology of Life on the Move focuses on migration as a behavioural phenomenon with important ecological consequences for organisms as diverse as aphids, butterflies, birds and whales. It is suitable for senior undergraduate and graduate level students taking courses in behaviour, spatial ecology, 'movement ecology', and conservation. It will also be of interest and use to a broader audience of professional ecologists and behaviourists seeking an authoritative overview of this rapidly expanding field.

Explores the methods by which animals navigate throughout the world, examining such examples as the monarch butterfly's use of an internal clock and the honey bee's reliance on the sun and mental maps.