420 Scientific Intelligence. 
the ee tempted him to go tosee them, and that he — 
= to the Laurentian. Sir W. objected, saying that 
specimen was not serpentine. Dr. Hunt assured him that it 3 
ehinnalaice that he had examined it; that the white ae 
with aci e also named some of the constituents; I don 
giaatieas what they were. Sir W. and Dr. Hunt t left. I el 
nothing more about the matter until my very kind host, Dr. 
Dawson , on returning from a visit to Gabriel street, told me, in 
h r 
my representative collection of Nova Scotia rocks in the Provincial 
Museum under my charge, thus: Arisaig — ophiocalcite and 
porphyritic diorite, at the bottom of the es; granites, new 
gneissoid rocks of Prof. Hin d, next ; adicialeoine rock and _ slates 
next ; and thus they had remained until the present time. Many a 
time | ave I pointed out these rocks to visitors who take an interest 
erican Journal of Science, although the sound of my 
voice may not have reached ve street, Montreal. I could 
I would now observe that, cing one cause or other, I had never 
met with Prof. Hind since the _ or referred to, until a day 
or two after he had read a paper on his discovery of the Laurentian 
rocks, — the Nova Scotia Tustiate of Natural Science. He 
t Dr. Lawson in the Museum. He commenced dis- 
oe the pes of his discovery. : then turned his attention 
S 
B 
® 
letter was inserted in the Halifax Mor ac Chronicle, egies by 
Prof. Hind to the Hon. Robert Robertson, ommissioner 
which I give the following qubsactas: © Raden dete Montreal, — 
3, 1870, Dr. Hunt informs me that recent microscopic examinatio 
of some of the specimens sent by Dr. Honeyman, has seeciaal 
well-defined ‘ n Canadense”” * ” continued Dr, Hunt, 
“must, I conceive, “ conclusive evidence of their Laurentian age.” 
* Digs Dawson, i ina separa rate communication, confirms the identifi- 
cation of the Eozoon.” 
I find, however, that in the discussion that followed the <tee 
paper, “On the Laurenti of yo. BE 
dressed to the Geological Society of London, Dr. Dawson rema 
that the Arisaig Eozoon was different from that of Canada; ‘tat 
the Eozoon Bohemienm oe to a formation more recent 
the Laurentian, and that the Arisaig Eozoon did not prove the 
