1 6b6 
l6kl 
16U8 
16U9 
1650 
1651 
1652 
1653 
165^ 
1655 
1656 
1657 
1658 
1659 
1660 
1661 
1662 
1663 
166^ 
1665 
1666 
1667 
1668 
1669 
1670 
1671 
1672 
77 
Y' Boston, Lincolnshire, England; fossil Lagena and 
fossil Polythalamia 
Z' England; fossil animals contained in a substance 
called "floating brick" 
A" Thames, Gravesend, England 
B" Wye, Maryland 
C" Wye, Maryland 
D" Wye, Maryland 
E" Wye, Maryland; fossil polyeistinae 
F" Wye, Maryland 
G" Calvert County, Maryland 
H" Petersburg, Virginia 
I" Petersburg, Virginia 
J" Petersburg, Virginia; 50 feet 
K" Petersburg, Virginia 
L" Petersburg, Virginia 
M" Petersburg, Virginia 
K" Petersburg, Virginia 
0" Petersburg, Virginia 
P" Petersburg, Virginia 
Q" Richmond, Virginia 
R" Richmond, Virginia; thick card 
S" Richmond, Virginia 
T" Richmond, Virginia 
U" Richmond, Virginia 
V" Richmond, Virginia; infusoria; behind Monument Church; 
Polythalamia; upper part of stratum 
W" Richmond, Virginia; third ravine behind Medical College 
X" Richmond, Virginia 
Y" Richmond, Virginia 
