Blackside dace, Rhinichthys osculus nubilus (GIRARD), were
collected from ten western Oregon streams and examined for variation
among morphological and meristic characters. Several characters were
observed to vary between populations studied. Number of vertebrae,
number of scales in and above the lateral line, length of snout, and
depth of body...
A study of the population ecology of Columbia River fall chinook
salmon, Oncorhynchus tshawytscha (Walbaum), was made in an attempt
to determine the cause of a serious decline in this run which occurred
in the early 1950's. Fluctuations in abundance of major salmon runs
the North Pacific were examined to...
The taxonomic placement of Gadopsidae is discussed and an evaluation of its osteological relationships with related families is given. Similarities to the more primitive genera of the trachinoids, notothenioids, and uranoscopoids are noted and the inclusion of Gadopsidae in the Trachinoidae is recommended. A description of the geological history of...
An examination was made of some reactions involving a transfer
of carbon from boron to carbon. In the case of the reaction of
a C[subscript n] alkylorganoborane with dichlorocarbene the intermediate was
a C[subscript n]₊₁ chloroalkylorganoborane. Oxidation of this intermediate
yielded an homologous acid (33%) and the usual alcohol (66%)....
Based on the number of velar tentacles and the form of longitudinal
lingual laminae found in Lampetra (Entosphenus) t. tridentata
and its closely related forms, the taxon Entosphenus should not be
considered as a genus as commonly adopted, but, along with the taxa
Lethenteron and Lampetra, should be regarded as...