368 ORILLA STOTLER WERNER. 



PLATE 8. 



FIGS. 43 to 48. Chromosomes from the amnion cells of males artificially ar- 

 ranged in pairs according to their size. 38Z, 38Z indicate what are probably the 

 sex-chromosomes. Numbers 37 to I are probably autosomes. 



FIG. 43. Chromosomes from an early metaphase shown at Fig. 4. 



FIG. 44. Chromosomes from an earlier metaphase shown at Fig. 7. 



FIG. 45. Chromosomes from a metaphase shown at Fig. 3. 



FIG. 46. Chromosomes from a prophase shown at Fig. i. 



FIG. 47. Chromosomes from a late metaphase shown at Fig. 6. 



FIG. 48. Chromosomes from an earlier prophase shown at Fig. 2. 



