Annals of the South African Museum, Volume 16The Museum, 1933 - Natural history |
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Page 528
... moving and altering their shape . Thus the range of possible exposure is very limited . In the case of inverting sperm bundles when the fastest available panchromatic plates were used with a powerful projector illuminant , the minimum ...
... moving and altering their shape . Thus the range of possible exposure is very limited . In the case of inverting sperm bundles when the fastest available panchromatic plates were used with a powerful projector illuminant , the minimum ...
Page 596
... moving intact for some hours or the sperms may begin to escape almost at once . Apparently globoids liberated into the cavity of the parent break up more rapidly than those free in the water , but it is possible that in the cases ...
... moving intact for some hours or the sperms may begin to escape almost at once . Apparently globoids liberated into the cavity of the parent break up more rapidly than those free in the water , but it is possible that in the cases ...
Page 637
... moving actively . Watched through completion of cell - division and inversion until 3.17 a.m. , when the colony was beginning to rotate within the vesicle , after which the colony was lost . This developing colony continued motile until ...
... moving actively . Watched through completion of cell - division and inversion until 3.17 a.m. , when the colony was beginning to rotate within the vesicle , after which the colony was lost . This developing colony continued motile until ...
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