642 GERMINATION AND DORMANCY 



Korstian, C. F. Factors controlling germination and early survival in oaks. 



Yale Univ. School of Forestry Bull. No. 19. 1927. 

 Morinaga, T. Germination of seeds under water. Contr. Boyce Thompson 



Inst. I : 67-81. 1926. 

 Ohga, I. On the age of the ancient fruit of the Indian lotuSj etc. Bot. Mag. 



(Tokyo) 41 : 1-6. 1927. 

 Rosendahl, C. O. Embryo sac development and embryology of Symplocarpus 



foetidus. Minn. Bot. Studies 4: 1-9. 1909. 

 Shull, C. A. The oxygen /ninimum arid the germination of Xanthium seeds. 



Bot. Gaz. 52: 453-477. 191 1. 



