The Victorian naturalist . of Australian Birds. 616 pages. Discount tomembers. Postage $ in Victoria. November/December 227 Galeolaria — the white. Coral-like GrowthA seen on rocks at low tide BY D. E. McInnes, Marine Biology Group, FNCV Everyone scrambling along a rockyshore sees a layer of white coral-Hkematerial on rocks exposed at low growth can also be seen on thepiles of a pier and particularly wellalong the fence of sea-water baths asin Fig. 1. The white layer extends ina level band that is just covered athigh tide and well clear of the waterat low tide. Most people see it
The Victorian naturalist . of Australian Birds. 616 pages. Discount tomembers. Postage $ in Victoria. November/December 227 Galeolaria — the white. Coral-like GrowthA seen on rocks at low tide BY D. E. McInnes, Marine Biology Group, FNCV Everyone scrambling along a rockyshore sees a layer of white coral-Hkematerial on rocks exposed at low growth can also be seen on thepiles of a pier and particularly wellalong the fence of sea-water baths asin Fig. 1. The white layer extends ina level band that is just covered athigh tide and well clear of the waterat low tide. Most people see it and think of itas just some corally stuff. But whatis it? A close look as in Fig. 2 showsit is composed of a multitude of inter-twined limy tubes (4). (The words andnumbers in bold type are key clues indetermining what the growth is; theywill be referred to again.) Look at thetubes with your hand lens (every goodnaturalist carries a hand lens); eachtube is seen to be blocked with anornamental disc just below the edge of. Figure 1. Along the wall of sea-water baths.
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Keywords: ., bookcentury1800, bookdec, booksubjectnaturalhistory, bookyear1884
