The genome of the nuclear polyhedrosis virus which infects the
larvae of the tussock moth, the lepidopteran, Hemerocampa
pseudotsugata, was isolated, identified as deoxyribonucleic acid, and
characterized in terms of its physical and biological properties. An
isolation procedure for the viral DNA was established which consisted
of the following steps:...
The purpose of this investigation was to compare some of the
properties of a spore-forming mutant of Bacillus cereus 569R with
the wild type. The strains were grown under identical conditions in
liquid medium. The mutant, strain 45, was characterized with
respect to growth rate, pH changes in the medium,...
The purpose of this investigation was to evaluate the effects of
a six week residential summer program of differential education for
gifted high school students. It was designed to determine the extent
to which participants in the program were proficient in aspects of
critical and creative thinking, and in the...
Field, growth chamber, and greenhouse studies were carried
out to evaluate factors that cause low seed set in Dactylis Glomerata
L. The variety, 'Latar', and the parental clones of the variety,
'Pennlate', were studied in detail.
Floral anatomy investigations indicated that 98 percent of
Dactylis flowers opened at Corvallis in...
The Columbia River Gillnetter is the pilot of the Lower Columbia River commercial fishing industry, keeping fishermen and the public in touch with today's important issues.
The entire human population is chronically exposed to various
contaminants, including lead and chlorinated hydrocarbon pesticides.
Studies were undertaken to assess the effects of chronic exposure to
lead on the toxicities of two such pesticides, lindane and dieldrin.
Mice were given lead as the acetate in drinking water, at levels...
This is the first volume of a new publication replacing the Research Briefs and the Contribution series. It follows Volume 13, Number 1 of the Research Briefs and Contribution Number 29. Frequency of publication of this series will depend on the number and size of acceptable manuscripts submitted to the...
Objectives of this study were to determine differences in
herbage production of three seral stages of three habitat-types.
Field studies were conducted in 1967 and 1968 on the Squaw Butte
Experimental Range.
Twelve, 400-square-foot, paired exclosures were established
in each habitat-type. Herbage was clipped from four, 48-squarefoot
samples in one...