430 SIR RAY LANKESTER. 
EXPLANATION OF PLATE 25, 
Nlustrating Sir Ray Lankester’s Memoir “On Archerina, 
Golenkinia, and Botryococcus.” 
Fic. 1.—A floating colony of Botryococcus Braunii, Kiitzing, of the 
chrysochlorous variety. Magnified about 100 diameters. 
Fie. 2.—Portion of a colony under cover-glass pressure, superficial focus, 
More highly magnified. 
Fic. 8.—A portion of a reddish colony. Still more highly magnified. 
Fie. 4.—Outline of a series of contiguous hollow reniform colonies, as 
found floating on lake-water. Magnified about 50 diameters. 
Fic. 5.—Portion of neighbouring reniform masses more highly magnified 
to show the fibrillated strands of jelly connecting them to one another. 
Fie. 6.—Cell in the gelatinous investment, with yellow granules. 
Fig. 7.—Cell with displaced capsule-lid. 
Fies. 8, 9, 10.—Similar cells to that shown in Fig. 6. 
Fies. 11,12, 18.—Large cell units with abundant orange-coloured granules. 
Fic. 14.— Five cells treated with alcohol, followed by hematoxylin and 
alum-staining-fluid, and mounted in balsam. A dark stained central body is 
seen. 
Fic. 15.—Cells in binary longitudinal fission. Observe the vacuoles. 
Fic. 16.—Cell with strongly marked capsule. 
Fig. 17.—Cells in binary longitudinal fission, as in Fig. 15. 
Fig. 18.—Two adjacent cells to show the shell-like capsule of each, the inter- 
posed jelly, and the capsular lid of each cell reflected owing to pressure, and 
about to allow the cell to be ejected as a naked isolated unit. 
