HE data which largely compose this contribution were T obtained in the course of observations bearing upon the factors which enter into a system of rational and economic irrigation, and in connection with the study of certain practical questions that relate to land irrigation on the Hawaiian Islands. These data, however, have also a more purely scientific value, and may have an interest for those who are more exclusively engaged in physiological investigations. T h e actual purpose of the observations which these data represent was to try to determine : first, the loss of moisture due to

No abstract

No abstract

The effects of acidity upon the crucifers and certain legumes, have been noted in soils notably less sour than most of the upland soils of these islands. The Director and Agriculturalist of the Rhode Island (U. S.) Experiment Station, Professor Flagg, in a communication concerning a sample of soil sent to the laboratories of the writer, says : "We found all this soil acid when tested with litmus paper ; so much so that timothy and clover, barley, beets, spinach, lettuce, and a few other plants, failed to thrive without the use of air-slaked lime to correct the acidity.