Subject ASC000140a
The Quarterly journal of the Geological Society of London.
v.29 (1873), Page 64 (1873)
Smithsonian Libraries
BHL Page 39050968
Keywords
radii Fig. 1. R radii r interior radii o spaces Fig 2. hexaradiate elements Sollas upper greensand ventriclite Fig. 1 Fig. 2 R spaces Geology ventriculitae Hexaradiate elements skeleton anastomosis radial fibres microscopic vitrea microscopy