| Sometimes few simple hexaradiate and geminate tetraradiate spicula are mingled. |
| In certain genera with a simple spike this is clearly proved by the structure of the terminal flower or spicula. |
| The spicula are quite smooth, as in the similar Sphrozoum ovodimare. |
| When nearly on the crest of the Portillo, we were enveloped in a falling cloud of minute frozen spicula. |
| Nature 'publishes itself in creatures, reaching from particles and spicula, through transformation on transformation to the highest symmetries. |
| The calcareous matter beneath the lava, and especially that forming the crystalline spicula, could not have been subjected to the effects of a passing stream. |
