Annals of the South African Museum, Volume 16The Museum, 1933 - Natural history |
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Page 571
... pore . Several rows of cells form a free rim to the pore within the connecting strands ( fig . 2 , J , K ) . ( 4 ) The connections between mother and daughter remain intact till a much later stage in development . In V. globator ...
... pore . Several rows of cells form a free rim to the pore within the connecting strands ( fig . 2 , J , K ) . ( 4 ) The connections between mother and daughter remain intact till a much later stage in development . In V. globator ...
Page 575
... pore . ( 7 ) As the infolding approaches completion , the pore enlarges greatly ( fig . 3 , E - H ; Plate XL , H - J ) , continuing to stretch until it is as wide as the colony . Up to now the daughter has been kept in position by the ...
... pore . ( 7 ) As the infolding approaches completion , the pore enlarges greatly ( fig . 3 , E - H ; Plate XL , H - J ) , continuing to stretch until it is as wide as the colony . Up to now the daughter has been kept in position by the ...
Page 644
... pore almost closed ( 202 ) . In the main series this stage was reached at 10.10 p.m. , but movement spoilt the photograph . D , 11.20 p.m. Pore beginning to open ( 318 ) . E , 11.50 p.m. Widening of pore continuing ( 319 ) . F , 12.5 ...
... pore almost closed ( 202 ) . In the main series this stage was reached at 10.10 p.m. , but movement spoilt the photograph . D , 11.20 p.m. Pore beginning to open ( 318 ) . E , 11.50 p.m. Widening of pore continuing ( 319 ) . F , 12.5 ...
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