An introduction to the study of cytology / by L. Doncaster.

Doncaster, L. (Leonard), 1877-1920.

Date:: 1920

Catalogue details

Licence: In copyright

Credit: An introduction to the study of cytology / by L. Doncaster. Source: Wellcome Collection.

19/352 (page 13)

PLATE ^ 0 face XVI. Life-history of the Gall-fly Neuroterus . . • P- 136 XVII. Hetero- and Idio-chromosomes in Hemiptera, from Wilson . . . . . • P> 156 XVIII. Chromosome-groups of Metapodias, from Wilson p. 160 XIX. Chromosome-cycle in Phyllaphis . . . p. 163 XX. Chromosomes in the development of eggs and spermatozoa in Rhabdonema nigrovenosum, after Boveri . . . . . . p. 167 XXL Chromatin diminution in segmentation of the egg of Ascaris, after Boveri . . . . p. 174 XXII. Germ-cell determinant in segmenting egg of Sagitta, after Elpatiewsky. Ectosomes in segmenting egg of Cyclops, after Amma . . . . . . . . p. 176 XXIII. Segmentation of the egg of Miastor, after Hegner p. 178 XXIV. Development of Dentalium, showing effects of re- moval of yolk-lobe, from Wilson . . p. 249 TEXT-FIGURES FIG. PAGE 1. Mitochondria in the spermatogenesis of Blaps, after Duesberg ........ 22 2. Golgi apparatus in epidermal cells, after Deinecka . 24 3. Equatorial plates showing arrangement of chromosomes, from Payne and Robertson .... 35 4 Telophase in pollen division of Paris, after Bolles Lee . 38 5. Diagram of eggs segmenting normally and compressed in glass tubes ........ 40 6. Tripolar and quadripolar spindles in Echinoid eggs, after Gray 57 7. Diagrams of spermatogenesis and oogenesis, after Gregoire ........ 61 8. Types of Insect ovarian tubes, after Korschelt and Heider ......... 74 9. Stages in the maturation of the egg of the Saw-fly Nematus ......... 81 10. Early development of the egg of Platygaster, showing origin of the trophamnion from the polar nuclei, after Silvestri and Marchal .... 82 11. Chromosomes of Biston hirtarius and Nyssia zonaria, from Harrison and Doncaster ..... 86 12. Diagram of chromosome division in somatic and matura- tion mitoses 89