360 ORILLA STOTLER WERNER. 



PLATE 4. 



FIGS. 19 to 22. Cells from the amnion of females showing gonomeric grouping 

 of the chromosomes. 



FIG. 23. This figure shows some of the forms assumed by chromosome number 

 37; also the location of the sutures. Figures a, b, c, d are from cells of the male, 

 and figures e, f, g, h, i are from cells of the female. 



