GYMXOSPERMS 



in the Triassic, and, with a few somewhat dubious fragments, disap- 

 peared in the Lower Jurassic. 



If we could be transported back into the Carboniferous and collect 

 living material in the swamps and forests we could write, with confi- 



FiG. 4. — ('arl)(}nifcroiis swamp-forest. Reconstruction in tlie I'ielci Museum at Chi- 

 cago. This figure shows only a part of the entire reconstruction. 



dence, the life-histories of these ancient plants, and could speculate 

 intelligently as to their probable ancestry and also their progeny. 

 As it is, there is enough in the way of impressions to warrant a re- 



