l88 BIBLIOGRAPHY 



87 Whittier, D. P., and Steeves, T. A., i960. Can. J. Bot., 38, 



925-930. (Apogamy in ferns brought about by glucose.) 



88 Williams, S., 1933. Trans, roy. Soc. Edinb., 57, 711-737. 



(Regeneration in Lycopodium Selago.) 



89 Williamson, W. C. and Scott, D. H., 1894. Phil. Trans. 



B 185, 863-959. {Palaeostachya vera.) 



90 Zimmermann, W., 1952. The Palaeobotanist, i, 456-470. 



(The main results of the Telome Theory.) 



