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TEE POPULAR SCIENCE MONTHLY 



these precious remains, says that here arose a vast forest where abounded 

 sequoias, poplars, oaks, magnolias, ebony, holly, walnut, and a host of 

 other species. Still farther north, at 80*^ of latitude, were found aquatic 



Fig. 3.— Principal P.vlms and Ctcade^ of the Middle Tertiary in Eitrope. 



plants, pond-weed, water-lilies, rushes, etc., and terrestrial plants — bald 

 cypress, thyme, fir, plane, linden, maple, mountain-ash, and even mag- 

 nolias, forming a grand forest. The illustrious Professor of Zurich, 

 M. Heer, regards many of these plants as miocene, and concludes that 



