Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
One of the Diatomaceæ, a family of minute unicellular Alg¨aving a siliceous covering of great delicacy, each individualmultiplying by spontaneous division. By some authors diatoms arecalled Bacillariæ, but this word is not in general use.