, the Pacific Northwest Laboratory has been conducting a geohydrologic in

Quantile and Wilcoxon Rank Sum (WRS) Tests for Type I Error Rate e = 0.01 for when m = n. m and n are the Number of Required Measurementsfrom the Reference Area and the Cleanup Unit, respectively ......... A.2 • A.3 Approximate Power and Number of Measurementsfor the Quantile and Wilcoxon Rank Sum (W,RS) Tests for Type I Error Rate e = 0.025 for when m = n. m and n are the , Number of Required Measurementsfrom the Reference Area and the Cleanup Unit, respectively ......... A.7 A.4 Approximate Power and Number of Measurementsfor the Quantile and Wilcoxon Rank Sum (WRS) Tests for Type I Error Rate e = 0.05 for when m-n. m and n are the Number of Required Measurementsfrom the Reference Area and the Cleanup Unit, respectively ......... A.12 xi ¢ A.5 Approximate Power and Number of Measurementsfor the quantile and Wilcoxon Rank Sum (WRS) Tests for Type I Error Rate e-0.10 for when m-n. m and n are the Number of Required Measurementsfrom the Reference Area and the Cleanup Unit, respectively ......... A.17 Q.

No abstract

No abstract

in allusion to the published map and sections of the district around London, by which the paper was illustrated, said it would be observed, that on the south-east there was a.n area of about 192 square miles, over the greater part of which the lower beds cropped out, and that they were very permeable. This was about six times the available area of the north-western district, where moreover t,he upper beds, usually clays, cropped out to the surface, which was thus rendered impervious to water, whilst the lower beds, generally sands, came to the surface in the east and south-east, which would explain the cause of so much water being found to the east of the fault, at Deptford.Mr. F. BRAITHWAITE suggested the necessity of defining very distinctly the meaning of the term '' water-bearing strata." Chalk when containing .flints and intersected by numerous fissures, might be considered as water-bearing, or rendering, like sand ; but pure solid chalk, although it easily absorbed water to saturation, did not part with it readily ; this difference must be borne in mind, in discussing the question.The Rev. Mr. CLUTTERBUCK, said he must preface the few remarks he had to make, by stating that subsequent investigations had strengthened his confidence in the correctness of the views, expressed in t,he several papers, presented by him to the Institution and discussed at the meetings in 1842, 1843, and 1850 ;I2 indeed his opinions had been confirmed, not only by the facts which had come under his own observation, but also by those which had been communicated to him by others. In speaking of the waterbearing strata of the London basin, it would be necessary clearly to understand their power of absorbing and retaining, aswell as of yielding, or giving out water. That which was retained, was by the power of' capillary attraction ; that which was given out, was by hydrostatic pressure ; to the latter the term of " Free-water " might aptly be applied. Professor Ansted's paper on the " Absorbent Power of Chalk," l3 had induced further investigation, whence it appeared that pure chalk would absorb one-third of its bulk and one-fourth of its weight of water, with which it would part only by evaporation. Thirty, or more pieces of perfectly dry chalk, piled on each other in a glass tube 3 feet in length, would on the Immersion of the lowest piece in water become, in about three months, SO perfectly saturated, that on immersion the upper piece would not take up more than a few grains of water. Chalk "' in situ," below the reach of evaporation, was frequently found in the same condition of super-saturation, and from the water, so p.