ee see 
Geology and Mineralogy. 421 
rocks to be Laurentian. Vide printed abstract of the proceedings 
of the Geological Society of London. 
0 not regard the discovery of Eozoon as the only evidence of 
the Laurentian age of the Arisaig rocks. I consider that relative 
position, in connection with /éthologicul character, must have some- 
thing to do with the determination of their age. Besides, is it not 
possible that, as there appear to be new different species of Eozoon 
belonging to different countries and different ages, that there may 
be different species in different countries, but still of the same age, 
and still that the Nova Scotian species is still Laurentian. 
nother extract from Prof. Hind’s letter: Dr. Hunt says, in 
his letter already referred to, “ A line from the Laurentian of 
Malignant Cove (Arisaig) to that in Newfoundland, will pass 
through Cape Breton, and we can now look for limestone and 
Eozoon there.” Is it not possible that the thought may have oc- 
curred to some one else besides Dr. Hunt? Perhaps Dr. Hunt has 
forgotten something that happened during the Exhibition in Paris 
of 1867. He came into the Nova Scotian Court, accompanied by 
Prof. Lesley of Philadelphia ; he found among the polished speci- 
mens of marble 
Hat has hit the mark. My defense is, [had not been able on 
account of the inclemency of the weather and lateness of the sea- 
Son, to exami ; 
48 was desirable ; I did not think there was any great hurry in the 
