Supplementary Material Available. Table III (15 pages), which contains the data for all 24 samples of total sediment and clay-size fraction, will appear following these pages in the microfilm edition of this volume of the journal. Photocopies of the supplementary material from this paper only or microfiche (105 X 148 mm, 24X reduction, negatives) containing all of the supplementary material for the papers in this issue may be obtained from the Business Op-

A difficult analytical problem was solved by combined use of several techniques to assay products from the liquid phase oxidation of paraffins. The method provides a quantitative measure for six classes of oxygenated compounds in the C12-C15 carbon number range. The procedure can be modified to handle mixtures outside of this molecular weight range. Samples are first separated into hydrocarbon and oxygenated compound fractions by elution through silica gel. The two fractions are then analyzed by com-

A routine method was developed to measure polynuclear aromatic compounds in coke oven effluents. Although other techniques are involved, the method is designated as a GC/UV procedure. In practice,

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