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Resolution of the sixty year debate over continental drift,
culminating in the triumph of plate tectonics, changed the very
fabric of Earth science. This four-volume treatise on the
continental drift controversy is the first complete history of the
origin, debate and gradual acceptance of this revolutionary theory.
Based on extensive interviews, archival papers and original works,
Frankel weaves together the lives and work of the scientists
involved, producing an accessible narrative for scientists and
non-scientists alike. This first volume covers the period in the
early 1900s when Wegener first pointed out that the Earth's major
landmasses could be fitted together like a jigsaw and went on to
propose that the continents had once been joined together in a
single landmass, which he named Pangaea. It describes the reception
of Wegener's theory as it splintered into sub-controversies and
geoscientists became divided between the 'fixists' and 'mobilists'.
The resolution of the sixty-year debate over continental drift,
culminating in the triumph of plate tectonics, changed the very
fabric of Earth science. This four-volume treatise on the
continental drift controversy is the first complete history of the
origin, debate and gradual acceptance of this revolutionary theory.
Based on extensive interviews, archival papers and original works,
Frankel weaves together the lives and work of the scientists
involved, producing an accessible narrative for scientists and
non-scientists alike. This second volume provides the first
extensive account of the growing paleomagnetic case for continental
drift in the 1950s and the development of apparent polar wander
paths that showed how the continents had changed their positions
relative to one another, more or less as Wegener had proposed.
Paleomagnetism offered the first physical measure that continental
drift had occurred and helped determine the changing latitudes of
the continents through geologic time.
The resolution of the sixty-year debate over continental drift,
culminating in the triumph of plate tectonics, changed the very
fabric of Earth science. This four-volume treatise on the
continental drift controversy is the first complete history of the
origin, debate and gradual acceptance of this revolutionary theory.
Based on extensive interviews, archival papers and original works,
Frankel weaves together the lives and work of the scientists
involved, producing an accessible narrative for scientists and
non-scientists alike. This third volume describes the expansion of
the land-based paleomagnetic case for drifting continents and
recounts the golden age of marine geology and geophysics. Fuelled
by the Cold War, US and British workers led the way in making
discoveries and forming new hypotheses, especially about the origin
of oceanic ridges. When first proposed, seafloor spreading was just
one of several competing hypotheses about the evolution of ocean
basins.
The resolution of the sixty-year debate over continental drift,
culminating in the triumph of plate tectonics, changed the very
fabric of Earth science. This four-volume treatise on the
continental drift controversy is the first complete history of the
origin, debate and gradual acceptance of this revolutionary theory.
Based on extensive interviews, archival papers and original works,
Frankel weaves together the lives and work of the scientists
involved, producing an accessible narrative for scientists and
non-scientists alike. This fourth volume explains the discoveries
in the mid 1960s which led to the rapid acceptance of seafloor
spreading theory and how the birth of plate tectonics followed soon
after with the geometrification of geology. Although plate
tectonics did not explain the cause or dynamic mechanism of
drifting continents, it provided a convincing kinematic explanation
that continues to inspire geodynamic research to the present day.
Children in precarious health present particular problems for
healthcare professionals because of their intimate relation to
their family, and because of the family's need to provide major
long-term source of support and to be actively involved in the
decisions about their children's care. This collection of cases and
commentaries in pediatrics highlights the difficult ethical
dilemmas that can arise during high-tech hospital care of children
in precarious circumstances. It serves as a teaching tool for
clinical ethics and as an introduction for medical students and
residents. Clinical cases are described in detail by the physicians
involved, who focus on the ethical issues arising during treatment.
Each case is then commented on in detail by a philosopher or other
bioethicist. It thus serves well as an introduction to contemporary
clinical bioethics, but with a firm grounding in the practicalities
of real-life pediatric care in the hospital setting.
When trying to solicit authors for this book it became apparent
that the causal factors for heterosis at the physiological and
biochemical level are today almost as obscure as they were 30 years
ago. Though biometrical-genetical analyses point to dispersion of
complementary genes - not overdominance - as the major cause of the
phenomenon, plant breeders' experience still suggests a cautious,
pragmatic approach to the dominance-overdominance controversy in
breeding hybrid cultivars. Thus we are faced with a striking
discordance between our limited comprehension of the causal factors
and mechanism of heter osis on the one hand, and the extensive
agricultural practice of utiliza tion of hybrid vigor on the other.
Such utilization is the result of the economic value of hybrid
combinations displaying superior yields and qualities as well as
stability of performance, of benefits derived in breeding programs,
and of the enhanced varietal protection of proprietary rights. No
comprehensive and critical analysis of the phenomenon of heterosis
in economic plants has been published for the last three decades
since the now classical book Heterosis, edited by J . W. Gowen
(Iowa State College Press, Ames, Iowa, 1952). The present book
attempts to fill the gap and to assess the status of our present
knowl edge of the concept, the basis, the extent, and the
application of heterosis in economic plants."
view than its own proper males should fecundate each blossom."
ANDREW KNIGHT Philosophical Transactions, 1799 Pollination
mechanisms and reproduction have a decisive bearing upon rational
procedures in plant breeding and crop production. This book intends
to furnish' under one cover an integrated botanical, genetical and
breeding-methodologi cal treatment of the reproductive biology of
spermatophytes mainly angiosperms; it is based on an advanced
topical course in plant breeding taught at the Hebrew University of
Jerusa lem. We have tried to present a coverage which is concise,
but as comprehensive as possible, of the pollination mechanism and
modes of reproduction of higher plants, and to illustrate topics,
whenever practicable, by examples from cultivated plants.
Nevertheless, some relevant publications may have escaped our
attention or may not be mentioned because of various limitations.
The book is organized into three parts. The first part starts with
an evaluation of the significance of the different pollination
mechanisms for plant breeding and crop produc tion, describes modes
of reproduction in higher plants and discusses ecology and dynamics
of pollination. The second part is devoted to crops propagated by
self pollination and describes specific breeding procedures for
such crops. The third part details sexual reproduction in higher
plants and handles three mechanisms involved in the prevention of
self pollination and their utilization in plant breeding: sex
expres sion, incompatibility, and male sterility."
The resolution of the sixty-year debate over continental drift,
culminating in the triumph of plate tectonics, changed the very
fabric of Earth science. This four-volume treatise on the
continental drift controversy is the first complete history of the
origin, debate and gradual acceptance of this revolutionary theory.
Based on extensive interviews, archival papers and original works,
Frankel weaves together the lives and work of the scientists
involved, producing an accessible narrative for scientists and
non-scientists alike. This fourth volume explains the discoveries
in the mid 1960s which led to the rapid acceptance of seafloor
spreading theory and how the birth of plate tectonics followed soon
after with the geometrification of geology. Although plate
tectonics did not explain the cause or dynamic mechanism of
drifting continents, it provided a convincing kinematic explanation
that continues to inspire geodynamic research to the present day.
Resolution of the sixty year debate over continental drift,
culminating in the triumph of plate tectonics, changed the very
fabric of Earth Science. This four -volume treatise on the
continental drift controversy is the first complete history of the
origin, debate and gradual acceptance of this revolutionary theory.
Based on extensive interviews, archival papers and original works,
Frankel weaves together the lives and work of the scientists
involved, producing an accessible narrative for scientists and
non-scientists alike. This first volume covers the period in the
early 1900s when Wegener first pointed out that the Earth's major
landmasses could be fitted together like a jigsaw and went on to
propose that the continents had once been joined together in a
single landmass, which he named Pangaea. It describes the reception
of Wegener's theory as it splintered into sub-controversies and
geoscientists became divided between the 'fixists' and 'mobilists'.
Other volumes in this set: Volume 2: Paleomagnetism and
Confirmation of Drift Volume 3: Introduction of Seafloor Spreading
Volume 4: Evolution into Plate Tectonics 4 Volume Set
Resolution of the sixty year debate over continental drift,
culminating in the triumph of plate tectonics, changed the very
fabric of Earth Science. This four-volume treatise on the
continental drift controversy is the first complete history of the
origin, debate and gradual acceptance of this revolutionary theory.
Based on extensive interviews, archival papers and original works,
Frankel weaves together the lives and work of the scientists
involved, producing an accessible narrative for scientists and
non-scientists alike. This second volume provides the first
extensive account of the growing paleomagnetic case for continental
drift in the 1950s and the development of Apparent Polar Wander
Paths that showed how the continents had changed their positions
relative to one another more or less as Wegener had proposed.
Paleomagnetism offered the first physical measure that continental
drift had occurred and helped determine the changing latitudes of
the continents through geologic time. Other volumes in this set:
Volume 1: Wegener and the Early Debate Volume 3: Introduction of
Seafloor Spreading Volume 4: Evolution into Plate Tectonics 4
Volume Set"
Resolution of the sixty year debate over continental drift,
culminating in the triumph of plate tectonics, changed the very
fabric of Earth Science. This four-volume treatise on the
continental drift controversy is the first complete history of the
origin, debate and gradual acceptance of this revolutionary theory.
Based on extensive interviews, archival papers and original works,
Frankel weaves together the lives and work of the scientists
involved, producing an accessible narrative for scientists and
non-scientists alike. This third volume describes the golden age of
marine geology and geophysics. Fuelled by the Cold War, US and
British workers led the way in making discoveries and forming new
hypotheses, especially about the origin of oceanic ridges.
Discovery of transform faults in the ocean crust and symmetric
patterns of geomagnetic reversals either side of mid-oceanic ridges
in the mid 1960s led to the rapid acceptance of seafloor spreading
and the birth of plate tectonics. Other volumes in this set: Volume
1: Wegener and the Early Debate Volume 2: Paleomagnetism and
Confirmation of Drift Volume 4: Evolution into Plate Tectonics 4
Volume Set
The success of the agricultural policy adopted in 1965 has given
India the hope of escaping from its circle of poverty. At the same
time the increased rate of economic development seems to have
exacerbated social tensions and accentuated disparities that may
eventually undermine the foundations of rural political stability.
Originally published in 1971. The Princeton Legacy Library uses the
latest print-on-demand technology to again make available
previously out-of-print books from the distinguished backlist of
Princeton University Press. These editions preserve the original
texts of these important books while presenting them in durable
paperback and hardcover editions. The goal of the Princeton Legacy
Library is to vastly increase access to the rich scholarly heritage
found in the thousands of books published by Princeton University
Press since its founding in 1905.
The success of the agricultural policy adopted in 1965 has given
India the hope of escaping from its circle of poverty. At the same
time the increased rate of economic development seems to have
exacerbated social tensions and accentuated disparities that may
eventually undermine the foundations of rural political stability.
Originally published in 1971. The Princeton Legacy Library uses the
latest print-on-demand technology to again make available
previously out-of-print books from the distinguished backlist of
Princeton University Press. These editions preserve the original
texts of these important books while presenting them in durable
paperback and hardcover editions. The goal of the Princeton Legacy
Library is to vastly increase access to the rich scholarly heritage
found in the thousands of books published by Princeton University
Press since its founding in 1905.
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