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many of these Kamtschatkan plants will in the future reach the northern shores of Japan, probably 

 through the agency of currents and migratory birds. Of such, Stellaria rusci folia, Swertia telra- 

 petala, and Erigertm salsuginosus (?), from their restricted range of distribution in the northeastern 

 and eastern coasts of Yezo, would form good examples. 



From these observations, I agree with Professor Milne in the opinion that at the time of the last 

 great southerly migration of the rich polar flora, Japan received her portion mostly through the isl- 

 and of Saghalin, and but little, if any, through the then uncompleted chain of the Kurile Islands. 



