112 TRANSACTIONS OF THE [Frs. 23 
however, are almost entirely absent. A bedded structure is 
sometimes noticeable in the arrangement of the mica. Protozoan 
tests or sponge gemmules complete enough to recognize are 
rare ; only two or three were certainly observed. Larger tests 
are more common, some referable to trilobites or ostracods, 
others appearing in the section as narrow straight rods, 
preserved in silica, often with a layer of phosphate at the edge. 
Innumerable minute fragments preserved in calcite are very 
likely comminuted tests of protozoa, 
Prarre 1. Most of these appear to be Monadites. Figs, 2 and 
8 may be foraminifera, and also, perhaps, Fig. 10. 
