Fossil trunk of the Naples tree, Arc haeosi gill aria 

 p r i m a e V a , in the State Cabinet of Natural History. Photo- 

 graphically reduced to }i the natural size. 



Diagrammatic outline sketch, in the same reduced size, of the 

 fossil, showing the relative positions of the rectangular areas 

 illustrated in natural size in the following plates, the numbers 

 of which are indicated by bold-faced type. 



The distances, in meters, from the base of the trunk are shown in 

 smaller numerals on the ris^ht. 



