APPENDIX 303 



masses of Eozoon in the Laurentian limestones of 

 that region ; ^ the Eozoon itself being there injected 

 with a hydrous silicate which may be described as 

 intermediate between glauconite and chlorite in 

 composition." 



In the Welsh specimen the silicate is of a deep 

 green colour, except where oxidized, and though 

 only 3 per cent, of the whole, is sufficient to give it 

 an olive colour and slight serpentinous lustre. In 

 the Pole Hill material, the silicate amounts to 5 

 per cent, of the whole, and is of a greyish colour. 

 For some further particulars, see my Paper on 

 " Fossils Mineralized with Silicates " {Journal Geo- 

 logical Society, February, 1879). 



C Affinities of Eozoon, etc., with 

 MORE Modern Forms. 



Dr. Carpenter, who in admirable papers, which I 

 need not quote here,^ has illustrated in detail the 



^ Journ.fur Prakt. Chemie, Bd., 106 (1869), p. 356. 

 * I may specially refer to the following : — 

 W. B. Carpenter on Eozoon Canadense. Intellectual 

 Observer, No. xl., p. 300, 1865. Supplemental notes on the 



