Ise: Diout’ Baddeley on the geognosy 
Somewhat conchoidal —hardness about the same as clay-slate— 
color of powder and streak, reddish-odour slightly bituminous 
when struck—specific gravity 2. 4. In water its surface is co- 
vered with minute bubbles, ut it neither falls to pieces in tt nor 
derives additional weight even after a long immersion. A speci- 
men from the Jast-mentioned place effervesces very slightly in 
acid, a character which is supposed to be owing to the proxi- 
mity of the marly clay. Before the blowpipe it fuses readily 
into a globule of glass, having a dirty green or brown colvur. 
Experiments alone can determine whether this rock is calcula- 
ted to answer the purpose of a roofing slate ; this must depend 
upon its possessing a requisite degree of fissility, and upon its 
power of resisting the action cf the atmosphere; our op‘nion 
upon both these points is favourable, but it is only derived from 
a hasty view of the quarry. With regard to our geological di- 
Iemma, without wasting more time in the attempt to reconcile 
apparent contradictions, which a more intimate acquaintance 
with the /ocale would probably clear away, we will continue to 
relate facts. The limestone at the last-mentioned place forms 
a bluff precipice on the shore of the lake, and contains corallites, 
encrinites and producte. The encrinites were as before in a 
fawn-coloured variety, well calculated for an ornamental mar- 
ble ; some of it has the conglomerated aspect before described. 
Pursuing our route, we reached the post of Metabetshuan, 
which we found by observation to be in latitude 48 © .-23?-11?. 
Like the Post of Tadousac, that of Metabetshuam is situated 
m_an alluvial bank, though differing in the materials which com- 
pose it. It is here a soil in which clay predominates, but con_ 
tains sufficient sand to give it fertility. Boulders of the rocks 
of the neighbourhood, and among them water-worn fragments 
of the secondary limestone we have just described with ‘their 
imbedded fossils, are freqnent. The fossils are generally of 
the same class as those found on the Manitouline chain of islands 
In 
