1962. Flora of the British Isles. Cambridge Univ. Press. 
CLARKE, G. L. 
1954. Elements of ecology. John Wiley & Sons, New York. 
CLAVAUD, A. 
1878. Sur le veritable mode de fecondation du Zostera marina. 
Actes Soc. Linn. Bordeaux, T. 32 (Ser. IV & II): 109-115. 
1879. Sur le veritable mode de fecondation du Zostera marina. 
Ann. Soc. Linn. Bordeaux, 4(2). Abstracted in Bot. Ztg., 
37: 5356 
CLEMENTS, F. E., and V. E. SHELFORD. 
1939. Bio-ecology. John Wiley & Sons, New York. 
CONOVER, J. T. 
1958. Seasonal growth of benthic marine plants as related to environ- 
mental factors in an estuary. Inst. Mar. Sci., 5: 97-147. 
COPE, 0. .B. 
1940. Black brant of San Quintin Bay, Lower Calirornia. Calif. 
Fish and Game, 26: 390-392. 
COTTAM, CLARENCE 
1933a.- Eelgrass, valuable sea plant, dying of mysterious diseases. 
Science News Letter, 24: 73. 
1933b. Disappearance of eelgrass along the Atlantic coast. Plant 
Dis. Rept., 17(6): 46-53. 
1933c. Recent observations on eelgrass conditions. Plant Dis. 
Rept., 17(10): 119-120. 
1933d. Furtherreports on eelgrass conditions. Plant Dis. Rept., 
17: 1ye-144. 
1934a. Past periods of eelgrass scarcity. Rhodora, 36: 261-26h. 
1934b. The eelgrass shortage in relatinn to waterfowl. Amer. Game 
Conf. Trans., 20: 272-279. 
