Chemistry and Physics. 51 
The specimens are from the Lower Cretaceous or Jurassic of 
Skidegate Channel, Queen Charlotte Islands. 
Finices.—Pecopteris.—The shales of Hornby Island, along 
with many obscure vegetable fragments, contain pinne o 
fern approaching in outline to Pecopteris Phillipsii of the Eng- 
lish Oolite, though of much smaller size. As its venation is 
not preserved, I think it best not to give it a name. 
The fossils from the Queen Charlotte Islands, consisting en- 
tirely of Pines and Cycads, while decidedly Mesozoic, would 
Indicate a somewhat older stage than the others, say the Juras- 
sic or Lower Cretaceous. 
_ The fossils from the coal-field of Vancouver Island, embrac- 
ing, in addition to coniferous trees, both wood and leaves of 
several species of Angiospermous Exogens, coincide with those 
of the Cretaceous of other parts of America, for example, of 
Nebraska. 
The fossils from Hornby Island, in shales believed to overlie 
those of Vancouver Island, are also Cretaceous; and there is 
nothiag to preclude their belonging to the upper part of that 
system, 
SCIENTIFIC INTELLIGENCE. 
I. CHEMISTRY AND PHysICcs. 
the zine can be broucht to the boiling point. The bottle is first 
deoxidized interiorly tr a current of dry hydrogen at a red heat ; 
