Annals of the South African Museum, Volume 16The Museum, 1933 - Natural history |
From inside the book
Results 1-3 of 78
Page 455
... seen . The outer membrane shows clearly , the inner only faintly . These cells were living , the outer portions of the cilia lashing vigorously , and appear- ing as a blurred zone outside the limiting membrane ; the basal quarter ...
... seen . The outer membrane shows clearly , the inner only faintly . These cells were living , the outer portions of the cilia lashing vigorously , and appear- ing as a blurred zone outside the limiting membrane ; the basal quarter ...
Page 590
... seen in side view , nearly circular in polar view , composed of some 512 cells . Very occasionally only eight divisions take place , giving half - size male bundles . From the 16- to the 64 - celled stage the structure appears as a wide ...
... seen in side view , nearly circular in polar view , composed of some 512 cells . Very occasionally only eight divisions take place , giving half - size male bundles . From the 16- to the 64 - celled stage the structure appears as a wide ...
Page 617
... seen development proceeds in the order given . It is at this stage that the oospores are often consumed by para- moecium , worms , etc .; the comparatively thin - walled , immobile , spherical structures seem peculiarly vulnerable ...
... seen development proceeds in the order given . It is at this stage that the oospores are often consumed by para- moecium , worms , etc .; the comparatively thin - walled , immobile , spherical structures seem peculiarly vulnerable ...
Contents
Observations on the Genus Volvox in Africa By FLORENCE RICH | 429 |
Introduction | 439 |
Volvox Rousseletii G S West | 450 |
12 other sections not shown
Other editions - View all
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