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CARBONIFEROUS VEGETATION AT BRADFORD. 



W. CUDWORTH, 



Bradford. 



In consequence of the energ-y of the members of its various 

 scientific societies, the neighbourhood of Bradford is being- 

 carefully 'worked,' especially as regards its geological features. 

 To students of geology the immediate district affords ample 

 opportunity for research owing to the diversity of its physical 

 features. It is especially rich in the flora of the Carboniferous 



Fossil Tree at Bradford. 



period, and many examples of the fossil tree [Sigillaria) and its 

 connected roots [Stigniaria) have been unearthed. A well-known 

 example of this type was discovered at Clayton, two miles from 

 Bradford, some years ago, and was secured by Professor 

 Williamson for Owens College, Manchester. Its diameter was 

 3 feet 9 inches ; the circumference of the largest root, near the 

 trunk, 6 feet 6 inches. One root had a length of about i6 feet, 

 and the ramifications of the various root branches spread over 

 an area of about 90 feet. This specimen, however, is but one 



Naturalist, 



