98 THURLOW C. NELSON". 



food. Berkeley ('23) found no style reformation under anaerobic 

 conditions. His conclusion, however, that the style represents a 

 reserve of oxygen is open to serious objection as herein explained. 

 The conclusions of Edmondson, '20, Alien, '21, Coker and 

 others, '21, Bokman, '23, Churchill and Lewis, '24, and of Lazier, 

 '24, agree in confirming the work of Coupin, 'oo, and the con- 

 clusions of my 1918 paper. Except in so far as the latter are 

 modified by the findings of Martin and of Berkeley, as set forth 

 in this paper, it is believed that the conclusions of Coupin and of 

 the writer represent the consensus of opinion today regarding the 

 origin, nature, and function of the crystalline style of lamelli- 

 branch molluscs. 



CITATIONS. 

 Allen, W. R. 



'14 The Food and Feeding Nabits of Fresh-water Mussels. BIOL. BULL., 27, 



127-139. 

 '21 Studies of the Biology of Fresh-water Mussels. Experimental Studies qf. 



the Food Relations of Certain Unionidae. BIOL. BULL., 40, 210-241. 

 Berkeley, C. 



'23 On the Crystalline Style as a Possible Factor in the Anaerobic Respiration 



of Certain Marine Molluscs. J. Exp. Zool., 37, 477-488. 

 Vonk, H. J. 



'24 Verdauungsphagocytose bei den austern. Zeitschr. f. vergl. Physiol. Bd. i, 



H. 3, 4. 

 Birge E. A., and Juday, C. 



'n The Inland Lakes of Wisconsin. The Dissolved Gases of the Water and 

 their Biological Significance. Bull Wis. Geol. and Nat. Hist. Sur., 22, p. 

 x + 259. 

 Blegvad, H. 



'15 Food and Conditions of Nourishment among the Communities of Inverte- 

 brate Animals Found on or in the Sea Bottom in Danish Waters. Rept. 

 Dan. Biol. Sta. for 1914, 22, 41-78. 

 Bokman, F. 



'23 Ueber Stoffwechselorgane einiger Mytiliden. Jen. Zeit. f. Naturwiss. 59, 



209-260. 

 Churchill, E. P., and Lewis, S. I. 



'24 Food and Feeding of Fresh-water Mussels. Bull. U. S. B. F. 39, 439-471. 

 Coker, R. E., Shira, A. F., Clark, H. W., and Howard, A. D. 



'21 Natural History and Propagation of Fresh-water Mussels. Bull. U. S. B. F. 

 Cole, A. E. 



'21 Oxygen Supply of Certain Animals Living in Water Containing No Dis- 

 solved Oxygen. J. Exp. Zool., 33, 239-320. 

 Collip, J. B. 



'20 Studies on Molluskan Ccelomic Fluid. Effect of Change of Environment 

 on the Carbon Dioxide Content of the Ccelomic Fluid. Anaerobic 

 Respiration in Mya arenaria. J. Biol. Chem., 45, 23-49. 



