Annals of the South African Museum, Volume 22South African Museum, 1928 - Natual history |
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Page 2
... transverse section they are seen to be narrower than the pith cells , and have a dense black inclusion of carbonaceous ( ? ) material in the centre of the lumen . The crushing action has effected a separation of the pith into two ...
... transverse section they are seen to be narrower than the pith cells , and have a dense black inclusion of carbonaceous ( ? ) material in the centre of the lumen . The crushing action has effected a separation of the pith into two ...
Page 3
... transverse section it was possible to determine the radial extent of five normal rings : starting from the pith , their thicknesses were consecutively 5 , 12 , 12 , 6 , and 12 mm . The first zone of radially seriated elements round the ...
... transverse section it was possible to determine the radial extent of five normal rings : starting from the pith , their thicknesses were consecutively 5 , 12 , 12 , 6 , and 12 mm . The first zone of radially seriated elements round the ...
Page 4
... transverse marks can be seen between some of the groups of pits . These marks are , I think , due to partial disorganisation of the tracheid wall , and cannot be interpreted as true rims , for they are not seen in the best preserved ...
... transverse marks can be seen between some of the groups of pits . These marks are , I think , due to partial disorganisation of the tracheid wall , and cannot be interpreted as true rims , for they are not seen in the best preserved ...
Page 9
... transverse section the wood is clearly marked out by growth rings . Sometimes the rings appear to be composite * or compound , possessing minor darker bands in the early wood . These , on closer examination , are seen to be produced by ...
... transverse section the wood is clearly marked out by growth rings . Sometimes the rings appear to be composite * or compound , possessing minor darker bands in the early wood . These , on closer examination , are seen to be produced by ...
Page 10
... transverse section of the stem . There may be different portions of the same strand cut at different distances from the centre . † In addition to these traces ( ? ) , which are cut more or less lengthwise , there are other smaller ones ...
... transverse section of the stem . There may be different portions of the same strand cut at different distances from the centre . † In addition to these traces ( ? ) , which are cut more or less lengthwise , there are other smaller ones ...
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Common terms and phrases
Anchiopella axial axis Baini Beil belong Bolivia bone Brit Calmonia Cape Univ capensis Ceres characters Chonetes Cladophlebis Clarke Conularia convex Cryphaeus Dalmanites described devon Devonian figs figured Flora Foss fossil frond frontal genal angles genus Geol Ginkgoites glabella granules head-shield Herscheli Homalonotus Ibid internal cast Knod Kozlowski lateral furrows length margin median Modiomorpha Molteno Molteno Beds Neues Jahrb Nuculites oblique Orbiculoidea Palaeoneilo Paléont Parana Phacops pinnae pinnules pits Plate pleurae pleural lobes posterior preserved Pseudoctenis Pterophyllum pygidium rachis radial Reed Rensselaeria resemblance Rhaetic Rhexoxylon Rhinesuchus ribs ring rounded S.A. Mus Salter Sandstone Schwarz secondary wood segments Seward shell side skull slightly South African Museum species specimen spines Spirifer surface Surv suture Taeniopteris TEXT-FIG Thinnfeldia thorax tracheids transverse tubercles Ulrich Upper valve veins venation Walkom width Williams and Breger XXII York State Mus Zeiller