SPENCER : ASTROMYELON. 
zone — there is a remarkable agreement in the form of the wedges 
and in the vessels and cells composing- them. 
In conclusion, the position which this most interesting group 
of plants occupied among the coal measure plants may be 
indicated — the Astromyelon and its allies seem to have oc- 
cupied an intermediate position between the Lepidodendroid plants 
« 
and the Gymnosperm Dadoxylons. The ligneous zone in the 
former plants closely corres ponds to the woody cylinder of 
Dadoxylon, while their parenchymatous tissues are homolegous 
with similar tissues in the Lepidodendroid plants. 
ON A DISCOVEEY OF FOSSIL FISHES IN THE NEW EED SAND- 
STONE OF NOTTINGHAM. BY ED. WILSON, F.G.S. 
Reference. — Report, British Association for 1881. 
