108 THE FLORA OF THE AMBOY CLAYS. 
found the leaves are all coated with a thick sheet of lignite, which, con- 
taining much water, cracked and fell to pieces on exposure. When first 
obtained the leaves were perfect and beautiful, but before they could be 
drawn they had suffered irreparable harm. Possibly more than one species 
is represented in these figures, as those represented by figs. 1, 4, and 5 
seem to have been trilobed, while in the others the lobes were subdivided 
so that they might be called five-lobed. Doubtless in the future more 
perfect specimens will be obtained, which will permit a more thorough 
comparison among themselves and with the Greenland plant. It seems 
to me, however, that we can not doubt that among these lobed leaves 
from the Amboy Clays we have a number that are identical with those 
found in the Atane beds of Greenland. 
Among the leaves figured on Pl. XLVI those represented by figs. 1, 3, 
and 6 are from beds in which the coating of the leaf was thin, amounting 
in some cases to a mere coffee-colored stain. These have been perfectly 
preserved, and in beds where the leaf impressions are of this character others 
no doubt will be found in the future that will present the complete outlines 
ry 
aud the range of variation of these leaves. Those shown at figs. 4, 5, 7, 
and 8 are, however, from the clays where the sheet of carbonaceous matter 
over the leaf impressions was less oxidized and thicker, and which failed to 
be preserved by any method adopted. Colodion, glue, mucilage, paraffin, 
water glass, all were ineffectually tried. Possibly a solution of shellac in 
alcohol, in which the leaf impressions had been dipped or sprayed, would 
have been more successful. We have here an illustration of the great 
difficulty which has attended the collection and study of the fossil plants of 
the New Jersey clays. 
Localities: Sayreville, South Amboy, Woodbridge. 
Cissires crispus Vel.? 
P]. XLII, figs. 20-23. 
Cissites crispus Velenoysky, Fl. Bohm. Kreidef., Part IV, p. 12, Pl. IV, fig. 6. 
We have figured here a number of small leaves with deeply toothed 
or incised margins. Among all fossil plants which have come under my 
observation that figured and described by Velenovsky with the above name 
