Description of anuran larvae with the use of staging tables is
a common practice in the study of frog life-histories, but there has
been no previous description or table of Ascaphus larvae. In comparing
Ascaphus larvae to a simplified staging table for anurans it
was found that these larvae vary...
Glyptholaspis americana (Berl.), G. confusa (Foa) and
deutonymphal Parasitus sp. were studied to determine the function
of the tritosternum. Studies were conducted on feeding, cleaning,
temperature and humidity sensitivity using intact individuals and
individuals whose tritosterna had been surgically removed.
The tritosternum was found to have two functions:
1) As...
Populations of mites and.nematodes were monitored on Watershed 10, H. J.
Andrews Forest. A minimum of 50 families and 60 genera of mites are
present, the majority being Cryptostgmata. Population estimates vary
from 5000-350,000 per square meter. Nine categories of nematodes are
present, most belonging to the saprozoic, dorylaimoid, aquatic...
This was an historical study which described the procedures used by a thirteen-member committee in an attempt to develop a merit-evaluation program for a middle-sized school district in Oregon.
A random sample of 33.5% of the certificated staff of School District
9 were interviewed in May, 1969. The results of...