Annals of the South African Museum, Volume 16The Museum, 1933 - Natural history |
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Page 474
... pools dried up completely and refilled several times during the summer . During the succeeding three months ( January to April 1932 ) Mr. Power kept the first Volvox pool under frequent observation , visiting it at intervals of two or ...
... pools dried up completely and refilled several times during the summer . During the succeeding three months ( January to April 1932 ) Mr. Power kept the first Volvox pool under frequent observation , visiting it at intervals of two or ...
Page 512
... Pool I - when the pool filled and the water was comparatively deep it was from the surface layers only ; for instance , on 31st January : " The water was about 6 inches to 1 foot deep where the collecting was done , and the net was ...
... Pool I - when the pool filled and the water was comparatively deep it was from the surface layers only ; for instance , on 31st January : " The water was about 6 inches to 1 foot deep where the collecting was done , and the net was ...
Page 513
... pools may fill and dry up several times during a single season , Volvox disappearing before the pool is dry and reappearing soon after it refills . 2. Of these three pools the first one found - Pool I - was visited repeatedly from ...
... pools may fill and dry up several times during a single season , Volvox disappearing before the pool is dry and reappearing soon after it refills . 2. Of these three pools the first one found - Pool I - was visited repeatedly from ...
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