Article I. — Eozoon in Laurentian Rochs. 
41 
flatten. Here we have on a small scale a form of growth 
similar to the larger dome-shaped masses of Eozoon Canadense 
described by Sir Wm. Dawson. 
There is a fossil described by Prof. James Hall {cryjptozoon 
proliferum), occurring in the Oalciferous rocks at Green- 
fleld, N. Y.,* which at first glance strikingly resembles the 
Acadian fossil above described, but it differs in the mode of 
growth, as it occurs in rosettes of various sizes, consisting of 
concave laminse. 
Another organism which occurs in black silicious slate 
near Lily Lake, consists of black, linear, flat objects that ap- 
pear to be of the nature of sea-weeds or graptolites, but which 
have not been found in specimens sufiiciently complete to 
give a satisfactory indication of their relationship. 
* See 36th Ann. Rep. N. Y. State, Mus. Appendix. 
