32 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



LITEKATUEE. 



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 and related Phenomena in Pinus sylvestris." Phil. Trans. Roy. 

 Soc. Vol. CXC. 1898. 



Coulter and Chamberlain. " Morphology of Spermatophytes." New 

 York. 1901. 



Dixon, Henry H. " Fertilisation of Pinus sylvestris" Ann. Bot. 

 Vol. VIII. 1894. 



Ferguson, Margaret C. " Development of the Pollen-tube and the 

 Division of the Generative Nucleus in Pines." Ann. Bot. 

 Vol. XV. June, 1901. 



Ferguson, Margaret C. " The Development of the Egg and Fertilisa- 

 tion in Pinus Strobus." Ann. Bot. Vol. XV. September, 1901. 



Hofmeister, W. " The Higher Cryptogamia." Ray Soc. 1862. 



