Annals of the South African Museum, Volume 16The Museum, 1933 - Natural history |
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Page 496
... position of gonidia before inversion ; C , early stage of inversion , infolded lip curving back ; D , side view of the same colony , slightly tilted , on a smaller scale ; E , a later stage , the infolded portion opening out ; F , G ...
... position of gonidia before inversion ; C , early stage of inversion , infolded lip curving back ; D , side view of the same colony , slightly tilted , on a smaller scale ; E , a later stage , the infolded portion opening out ; F , G ...
Page 555
... position of that organ . As in the case of the cilia , the position of the eyespot has a definite orientation in relation to the axis of the colony , always occupying a position between the points of insertion of the cilia , but well ...
... position of that organ . As in the case of the cilia , the position of the eyespot has a definite orientation in relation to the axis of the colony , always occupying a position between the points of insertion of the cilia , but well ...
Page 600
... position may be connected with the second divergence in behaviour - this is in the rate at which inversion proceeds . As yet inversion has only been watched in comparatively few cases in V. capensis , but in every case it was found that ...
... position may be connected with the second divergence in behaviour - this is in the rate at which inversion proceeds . As yet inversion has only been watched in comparatively few cases in V. capensis , but in every case it was found that ...
Contents
Observations on the Genus Volvox in Africa By FLORENCE RICH | 429 |
Introduction | 439 |
Volvox Rousseletii G S West | 450 |
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Africa algae antheridium antheridium mother-cells appear asexual colonies aureus Cape Flats capensis cell-division chloroplast cilia coenobia coenobium collected complete connecting strands containing culture daughter colonies diameter dioecious division elongated embryo embryo colonies endospore enlargement equatorial escape Eudorina eyespot female colonies gelatinous germination globator gonidia gonidium hollow inversion Juveniles Kimberley Kuschakewitsch large number latter Linyanti Linyanti River living material lobes M. A. P. Neill male colonies methylene blue monoecious N'gamo nucleolus nucleus number of cells number of daughter observations occasionally oospheres oospores phase phialopore phytoplankton Plate XVIII pool pore posterior pole protoplasmic connections protoplast pyrenoid reproductive cells Rich and Pocock Rietfontein ripe oospores Rotifers rounded seen sexual colonies Shaw slightly smaller somatic cells species of Volvox sperm bundles sperm globoids spermatozoids spherical spines spore stained surface view usually vacuoles vesicle vleis Volvox africanus Volvox gigas Volvox Rousseletii wall young colony