1893. ] NEW YORK ACADEMY OF SCIENCES. 113 
The outlines of these nodules have little regularity ; they are, 
as a rule, flattened in the direction of the bedding. Usually 
they have the same distinctly marked surface as those in Zone 2, 
but occasionally they fade out into the surrounding sandstone. 
In the accompanying figures are shown some of the most 
perfect of the small bodies in the nodules of Zone 2. The first 
three plates represent those referred to as perhaps gemmules 
of sponges (Monadites), and the supposed Foraminifera, The 
last plate contains the most distinctly outlined of the forms 
which can be considered as sponge spicules—though some, if 
not all, of these may be sections of broken tests of foraminifera 
or Monadites. In the lower part of this plate are shown the 
shapes characteristic of the glauconite grains. 
The calcite which usually fills the interior of these bodies, and 
Prats 2. These are probably Monaditles, Fig. 3 being the urn- 
shaped form (JZ. urceiformis). Fig. 9 is perhaps a Foraminifer. 
Transactions N. Y. Acad. Sci. Vol. XII. April 18, 1893. 
