PLATE 4 



EXPLANATION OP FIGURES 



29 Drawing of a single follicle grouping from a model of a segment of ovary 

 no. 26. Two ova are shown each of which is within its own follicular epithelium. 

 The irregularity of the 'investing' follicle mass is shown. 



30 An ovum partially invested. From the model as in figure 29. A cordlike 

 follicular mass lies adjacent to it. 



31 Dniwing of a single irregular pluri-ovular follicle from a model of a segment 

 of ovary no. 35. 



32 As in figure 31. The marked irregularity and cordlike extensions are shown. 



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