This investigation attempts to demonstrate that the development
of the early 20th century biological enterprise involved a striving for a
unifying theoretical perspective. A skeletal substantiation of this is
given by an overview of early 20th century biology in which some
biologists began recognizing a multiplicity of different orders of...
This analysis concerns the life and scientific work of Henry
Augustus Rowland (1848-1901), organizer and the first chairman of
the physics department at The Johns Hopkins University in 1876.
Special materials used in this research included three pieces of
Rowland's experimental apparatus which are extant in the Smithsonian
Institution Division...
The major historical studies that have examined American
biology have emphasized the development of experimental biology at
the end of the nineteenth century. In this characterization, the
descriptive branch of biology has often been treated as less than
important and, in several cases, as a hindrance in the application
of...
In their modern context questions of heredity have come to be
closely aligned with theories of evolution because all such theories
require the presence of heritable variation. Thus the need for an
understanding of a source of variation and a mechanism for its inheritance
became very apparent with the general...
A number of historians of science have been involved
in studying the nature of biology at the turn of the
century, and the picture that they have developed describes
biology during this time as a field struggling to define
itself. During the late nineteenth and early twentieth
centuries, biologists were...
The resurgence of creationism the past few years has been led by advocates
of recent-creationism. These individuals, a minority among creationists in general,
argue that the entire universe was created approximately 10,000 years ago in one six-day
period of time. Recent-creationists support their position by appealing to the
Genesis account...
This study traces the historical foundations of the concept of
constant ionic proportionality and the equation (Salinity [S%₀] = 1.805
Chlorinity [Cl%₀] + 0.030) which has been in general use in oceanography
since 1902 until 1969 and which is based upon this constancy,
The notion that the constituents present in...
RNA isolated from BAI strain A (Myeloblastosis) Avian Tumor
Virus can be fractionated into two fractions on a sucrose density
gradient, one of higher molecular weight and one of low molecular
weight. The low molecular weight (LMW) virus RNA was found to
chromatograph the same as E. coli tRNA on...
John Wesley Powell worked actively for public land system
reform while a director of geographical and geological surveys in
the West from 1869 to 1894. Although this has won him acclaim as a
conservationist, the basis of Powell's linkage of reform with
scientific work is poorly understood.
A study of...