370 



CALAMITES. 



[CH. 



lowest nodal constriction ; on the right of the pith-cast the broad 

 band of wood is faintly indicated by the smooth surface of the 



Fig. 100. Galamites [Galamitina) approximatus Brongn. Lower Coal-Measures 

 of Ayrshire. 

 X, impression of the wood. 



(From a specimen in the collection of Mr R. Kidston.) 



rock (x). Other examples demonstrating the existence of a broad 

 woody cylinder in Galamitina stems have been figured by Weiss^ 

 and other writers, and some good examples may be seen in the 

 British Museum. 



We have so far noticed the connection of certain forms of 

 pith-casts {e.g. Galamites approximatus), and Asterophyllitean 

 shoots with stems of the sub-genus Galamitina. 



As regards the strobili our knowledge is far from satisfactory. 

 Stur^ figures some fertile branches bearing long and narrow 



^ Weiss, loc. cit. PI. xxi. fig. 5. 



" Stur (87), PI. XI. fig. 1. 



