Recognition of Family Judgments in the Commonwealth. By J. D. McClean. [London: Butterworths. Commonwealth Law Series. 1983. xxxvii + 370 pp. £33.]

Assessing the Ecological Risk of Polycyclic Aromatic Hydrocarbons in Sediments at Langkawi Island, Malaysia

“…The OM content in dry sediment was measured using the method explained by Briggs [17]. Dry sediment (2 g) from each station was placed in a clean preweighed porcelain dish and heated in a furnace at 550°C for 6 h. The percentage of OM was calculated based on the mass ratio of sediment weight in the porcelain dish before and after heating.…”

Hierarchical scales of spatial variation in the smaller surface and near-surface macrobenthos of a subtropical intertidal seagrass system in Moreton Bay, Queensland

“…As previously, 50 mm deep 9 30 mm diameter sediment cores were placed in a 0.25 m 9 30 mm glass measuring cylinder after removal of any seagrass rhizomes, etc., local tap water was added to fill the cylinder, and the system was shaken until the sediment was thoroughly suspended. It was then allowed to stand for 2 h, after which time the proportion of fine particles (2-63 lm) was determined volumetrically (Briggs, 1977).…”

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“…The content of calcium showed a wide range, though most of the populations were from soils with intermediate content (Nicolas, 1968). Other nutrients such as magnesium, sodium and potassium showed average values for acid soils (Briggs, 1977). Cation exchange capacity value depends on soil composition and texture displayed a broad range of values, though many of the populations came from soils with a low cationic exchange capacity.…”