PLATE 4 
EXPLANATION OF FIGURES 
13. Dissection of urogenital system of bird No. 1425. d, the oviduct; g, the 
gonad. 
14 Dissection of urogenital system of bird No. 1426. d, the large coiled 
left oviduct; 0, the ovary on the left;rd, the crumpled right oviduct; ts, the testis 
lying on the right. 
36 
