106 A FEW HINTS ON LOCAL FOSSIL COLLECTING 
of providing proper quarters for a City Museum, which 
would enable us to separate distinctly and put all things in 
their proper places. 
The writer wishes to call the particular attention of Evo- 
lutionists to a note of Dr. Gurley’s recently published by 
the Smithsonean Institute, in a work on ‘“* Dendroid 
Graptolites of the Niagara Dolomites at Hamilton, Ontario,’’ 
compiled by Dr. Ray S$. Brassler. With reference to 
Inocaulis plumulosa Hall, he remarks: 
‘““The general habits of I. plumulosa can best be 
described by a comparison with a Lepidodendron or a 
Lycopodium ; it not only resembles these plants in the 
mode of its branching and the uniformly wide, blunt end- 
ing branches, but also in their scaly appea rance.”’ 
Only six Graptolites were found in upper Silurian 
rocks before the discovery of what Professor Brassler calls 
the wonderful fauna here. Theirsudden extinction is very 
remarkable and unaccountable. Only one is found in suc- 
ceeding Devonians. Like the Cephalopod, of the Mcsozoic 
Age, they seemed never so numerous as on the eve of their 
disappearance, and we are unable to assign any cause here 
for the family extinction. 
