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



PLATE 26 



Fig. 7. Strip of Alaria 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 m to s is 4 cm. 



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

 5 cm. and one S 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 « to r is 13 cm. 



Fig. 11. Strip of Agarum fimbriatum 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 jimhriatiim as in figure 11, 22 days 

 later; from * to r is 9 cm. 



