Bull. U. S. B. F., 1923-24. (Doc. 963.) 
Fig. 7. — Section of stomach of L. luteola about 3 mm. long, which had been kept in a suspension of carmine . 
A, carmine grains; IS, Scenedesmus sp.; C, entrance to intestine. X430. 
Fig. 8. — Cross section of intestine of mussel of Figure 7. A, epithelium of intestine; B, mass of carmine. 
