^^HE age of the 7'ocks known to Geologists 

 as the Coal Measures or the Upper 

 Carbofiiferoiis^ frorfi which all our EngltsJi 

 coal is derived^ is ext7'e7?iely greats and 

 the flora which existed in Britain when 

 these rocks were formed ivas entirely 

 different^ both in its nature and affinities,^ 

 from that with zvhich we are familiar 

 to-day. The photographs that follow 

 illustrate the more important plants which 

 then flourished in Britain^ and some of 

 the co?}i7?ioner species. They, naturally, 

 07ily represe7it a S7iiall 7iu77iher of ihe 

 species 7tow k7iow7i, a7id, further, the flora 

 of the Coal Measures is 07ily one of 7na7iy 

 fossil floras with which we a7'e acquai7ited^ 

 thougli perJiaps the best knoiV7i of all. 



