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A novel system of dark field illumination suitable for stereoscopic microscopes is described in which a beam of light is directed between the objectives. The system is used in an examination of the pattern of pseudopodia produced by the foraminifer Reophax moniliformis Siddall in which groups of pseudopodia are often seen to make abrupt obtuse angle changes of direction between about 130° and 160°.

journal of micropalaeontology

A novel method of dark field illumination for a stereomicroscope and its application to a study of the pseudopodia of &amp;lt;i&amp;gt;Reophax moniliformis&amp;lt;/i&amp;gt; Siddall (Foraminiferida)