-16 - Cooperative Studies Some of the experiments at the Laboratory are conducted in cooperation with the Hanford Works, since the two facilities working together provide much of the desired equipment, location and experienced personnel necessary to the accomplishment of these experiments. Portions of the project are carried on in one laboratory for a time and then continued by transferring the animals to the other laboratory for further development. Parts B. and C. of this section are projects of this type. A. Temperature experiment with chinook salmon The third and final phase of the temperature experiment with chinook salmon eggs and‘was initiated in September. This phase of the work varied from what has been done previously in that four instead of one race of salmon were used and in that the temperatures changed with the season instead of remaining constant. Observations are being made of mortality, rate of development, growth rate, occurrence of morphological abnormalities, and variation in meristic characters both within and between racial groups. the first of May. The experiment will be concluded Tabulathon of some of the data from the earlier experiments has been completed. Analyses of the remaining data and a report upon the entire experiment are expected to be completed during the next fiscal year.