Andersen, S. Th. and Bxklsen, F. (Geological Survey of Dxmark.) Scaiiriirrg electroil riiicroscope srirdics of pollcri 01 ccreals arid other grasses. Gmna 12: 79-86, 1912.-Various authors disagree about the identification of ccrea! pollen based on phase 'contrast studies. Pollen of thc common cereals and some wild grasscs of a similar sire range \\ere examined with a scanning electron rnicroscopc. T h e pollen grains of ilordeuiri, Secalc, Triticiitii rrioiio-COCCIIIII, Agropyrorr, Aiiiriiopliila, Elyiiiiis and Gfyceriri species have P scabrate sculpture of varying coarseness. The pollen of other Trificitiii species and Averin have an areolate sculpture. .

Patients from a city area required more information than patients from a rural/urban area. Information about the influence on daily activities was preferred to unpleasant information. Ranking information in Denmark was correlated with a number of Commonwealth countries.

The fixation of selenite by clay-( < 2 pm), silt-(2-20 pm) and sand-size (20-2000 pm) separates from two arable soils was examined in solutions of 75Se-labelled sodium selenite using a Se/sample ratio of 1/106. Size separates were isolated by ultrasonic dispersion and gravity sedimentation. Selenite fixation was determined after equilibration periods ranging from 5 min to 26 h. Hydrogen peroxide-treated samples were included to examine the effect of organic matter on selenite fixation capacity.The relative distribution of native Se, C, dithionite/citrate-extractable Fe and A1 between size separates was similar. Concentrations in clay were four to nine times higher than in whole soils, silt showing two to five times higher concentrations and sand being very low in Se, C, Fe and Al.After 1 h, clay, silt and sand fixed 64-65%, 45-61% and < 5 % of the selenite added, respectively. The fixation on whole soils was 1418%. After 1 day, fixation on clay, silt, sand and whole soil increased to 78-87%, 67-79%, 3-1470 and 31-39%, respectively.Hydrogen peroxide-treatment reduced the selenite fixation capacity of whole soil, silt and sand to very low levels. Fixation on peroxide-treated clay was in accord with values for pure clay minerals reported in the literature. Generally, the fixation capacity of peroxidetreated natural clay and pure clay minerals was only half that observed for intact claysize separates, demonstrating the importance of organic matter in soil selenite fixation capacity.

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The late Triassic-early Jurassic Vinding and Gassum Formations are redefined and mapped within the Norwegian-Danish Basin. The Vinding Formation is a brackish marine shallow water deposit restricted to the Danish Subbasin. It is of late Norian-Rhaetian age. The Gassum Formation is a fluvio-deltaic to near-shore marine, arenaceous deposit carried from north and east into the basin. Its upper part is diachronous, ranging in age from Rhaetian in the basin center to late Sinemurian in the northern margin. It is proposed that the Ullerslev Formation is repealed. The parallelism between the course of sedimentation in the Norwegian-Danish Basin, the North German Basin and the Polish Basin indicates eustatic sea level changes to be of greater importance than local tectonic events.