STELLATE OBJECTS FOR THE
Radiolaria. Although not uncommon in the seas of the world these are not stranded on the beachline as are other organisms. This is probably because they are siliceous in nature, unlike the Foraminifera and some sponge spicules which are calcareous. This image is from the fossil deposits of Springfield Barbados West Indies, and must be seen in dark-ground illumination. Central black patches of increasing diameter may be tried in the centre of the sub-stage filter holder until all direct light is excluded but the object remains brightly illuminated by oblique light from the sub-stage condenser. The sub-stage iris needs to be wide open.
Comments to the authors Comments to the author sent via our contacts page quoting page url plus : ('bdarnton','')">Brian Darnton and Comments to the author sent via our contacts page quoting page url plus : ('wegmond','')">Wim van Egmond are welcomed.
More pictures of microscopic subjects can be found on Wim's HOME PAGE and Brian's HOME PAGE
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All photographs © Wim van Egmond
Published in the December 2000 edition of Micscape Magazine.
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