A 
B 
A and B.— CARTILAGE-CELLS SHOWING FIBRILLAR STRUCTURE OF THE PROTOPLASM. 
. \Flemming. ] 
Alveolar structure of protoplasm, 
according to Biitschli. 
E.— ARTIFICIAL EMULSION OF 
OLIVE OIL, COMMON SALT 
AND WATER, 
A.— EPIDERMAL CELL OF 
EARTHWORM. 
