Chart No. Page. 



268. Distribution of algae on Spindle Rocks, 



Apr. 22, 1905 538 



269. Distribution of algae on Spindle Rocks, 



May 22, 1905 539 



270. Distribution of algae on Spindle Rocks, 



June 29, 1905 540 



271. Distribution of algae on Spindle Rocks, 



July 22, 1905 541 



Chart No. Page. 



272. Distribution of algae on Spindle Rocks, 



Sept. 2, 1905 542 



273. Distribution of algae on Spindle Rocks, 



Sept. 19, 1904 543 



274. Distribution of algae on Spindle Rocks, 



Dec. 30, 1904 544 



