. Protozoo?logy. Protozoa; Protozoa, Pathogenic. 144 CONJUGATION, MATURATION, AND FERTILIZATION characterized as follows: Two are destined to degenerate as "reduc- tion nuclei," four become the centres of shell formation of the spores, four become centres of pole capsule formation, and four remain as Fig. 00. Autogamy in Ameba In upper ligure secondary (gametic) nuclei are shown emerging from the primary nuclei. In central figure is pictured the union of gametic nuclei togetlier with some unde\'eloped ones in a | nucleus. In lower figure is sliown the mass of siior
. Protozoo?logy. Protozoa; Protozoa, Pathogenic. 144 CONJUGATION, MATURATION, AND FERTILIZATION characterized as follows: Two are destined to degenerate as "reduc- tion nuclei," four become the centres of shell formation of the spores, four become centres of pole capsule formation, and four remain as Fig. 00. Autogamy in Ameba In upper ligure secondary (gametic) nuclei are shown emerging from the primary nuclei. In central figure is pictured the union of gametic nuclei togetlier with some unde\'eloped ones in a | nucleus. In lower figure is sliown the mass of siiorofilasts wliich de\'elt.)it from tlie fertilized gametes, (.\fter Calkins.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Calkins, Gary N. (Gary Nathan), b. 1869. New York and Philadelphia, Lea & Febiger
Size: 1200px × 2082px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkandphiladel
