Annals of the South African Museum, Volume 16The Museum, 1933 - Natural history |
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Page 470
... detail from the same colony . × 1000 . x 83 . × 52 . C. Young asexual colony with 19 daughters in early stages of cell division . D. Colony with nearly ripe oospores ; about ten rounded gaps in the cell network indicate the positions of ...
... detail from the same colony . × 1000 . x 83 . × 52 . C. Young asexual colony with 19 daughters in early stages of cell division . D. Colony with nearly ripe oospores ; about ten rounded gaps in the cell network indicate the positions of ...
Page 528
... detail was photographed under higher powers - in many cases it was found possible to observe and photo- graph successfully , while actually living , single cells or groups of cells , using a 1/12 " oil - immersion lens . In this way a ...
... detail was photographed under higher powers - in many cases it was found possible to observe and photo- graph successfully , while actually living , single cells or groups of cells , using a 1/12 " oil - immersion lens . In this way a ...
Page 585
... detail in the case of V. Rous- seletii , partly because it was in this form that it was first studied , and partly because it is undoubtedly the most favourable for observa- tion . Then the points in which V. capensis differs from it ...
... detail in the case of V. Rous- seletii , partly because it was in this form that it was first studied , and partly because it is undoubtedly the most favourable for observa- tion . Then the points in which V. capensis differs from it ...
Contents
Observations on the Genus Volvox in Africa By FLORENCE RICH | 429 |
Introduction | 439 |
Volvox Rousseletii G S West | 450 |
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Common terms and phrases
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