Page:A Voyage of Discovery and Research in the Southern and Antarctic Regions Vol 1.djvu/442

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Grammostomum divergens. Rotalia antarctica. Rotalia Erebi. Spiroloculina  

Several forms of the genus coscinodiscus have been recognised with their green ovaries, and must certainly therefore have been collected in a living state.


 * 1)  Buchii.
 * 2) Rossii.
 * 3) Coscinodiscus lineatus.
 * 4) lunæ.
 * 5) oculus Iridis.
 * 6) radiolatus.
 * 7) subtilis.
 * 8) Dictyochia aculeata.
 * 9) Eunotia gibberula.
 * 10) Fragilaria acuta.
 * 11) pinnulata.
 * 12) rotundata.
 * 13)  antarcticus.
 * 14)  tubulosus.

These and the preceding mass were sent over in water in the same sealed glass vessels in which they were collected in 1842. Hemiaulus antarcticus was the prevailing form found in the first smaller bottle, which has a rich sediment, almost all the separate atoms of which are independent siliceous-shelled creatures. The larger bottle was only about a quarter full, the larger portion having exuded through the sealed cork: almost the whole of the mass of sediment arrived in Berlin in 1844 in a state which I do not hesitate to call a living state, though all were forms having little or no motion. The Fragilarias predominated (Fragilaria pinnulata); these, though rarely hanging together in the form of a chain, still preserved for the most part their green ovaries in the different natural arrangements. Coscinodisci and Hemiaulus also showed in many cases groups of grains still green in their inside. No motion.

The following Nos. were sent dry:—