Photograph from Janet M. Cummings 



A FERN-TREE GULLY IN VICTORIA, AUSTRALIA 



No other continent is so rich in ferns as Australia. Just as its long isolation kept out 

 the animals of other continents and allowed species of old geologic ages to persist, so also 

 that isolation has resulted in the continuance of plant forms there that have lost the race 

 for existence in other continents. Among these are some of the great tree ferns that are 

 met with elsewhere only in fossil form. 



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