150 Puget Sound Marine Sta. Pub. Vol.. 1, No. 13 



PLATE 26 



Fig. 7. Strip of Aloria cordata 20 cm. long marked into 5 cm. 

 spaces ; margin 5 cm. wide left on each side of midrib. 



Fig. 8. Same strip of Alaria cordata as in figure 7, 25 days later; 

 from ni to s is 4 cm. 



Fig. 9. Strip of Cost aria costata 18 cm. long, marked into three 

 5 cm. and one 3 cm. spaces ; margin 1 cm. wide each side of central rib. 



Fig. 10. Same strip of Costaria costata as in figure 9, 28 days later; 

 from s to ?• is 13 cm. 



Fig. 11. Strip of Agarum fmbriatum 18 cm. long, marked into three 

 5 cm. and one 3 cm. spaces ; margins 2 cm. wide each side of midrib. 



Fig. 12. Same strip of Agarum fimbriatum as in figure 11, 22 days 

 later: from * to r is 9 cm. 



