nd thus form
strata; and, secondly, from a tendency in earthy matter, consolidated
both by water and subsequent exsiccation, to divide, independently of
the fineness or quality of its component particles, into strata or
laminae.'

Whether Mr Wells be right in his conclusions, remains to be proved;
geologists will not fail to examine into his proofs. They may,
however, remember, that Agassiz has remarked, that saw-dust through
which water has been filtered, will 'assume a regular stratified
appearance;' and that, in beds of clay and clay-slate, the deposits
are such as to justify these conclusions.

The _Felix Meritis_ Society at Amsterdam propose to give their gold
medal, or twenty gold ducats (L.10), for the best answer to the
questions--'What are the re-agents the most proper to demonstrate, in
a sure and easy way, the presence of ozone, and to determine its
quantity? Does ozone always exist in the atmosphere, and under what
circumstances, regard being had to the seasons and hour of the day, is
it found to increase or diminish? From what properties can it be
inferred that ozone is favourable or hurtful to the animal economy,
and what has experiment made known in this respect, particularly in
the appearance or disappearance of epidemic diseases?'

The treatises are to be distinguished by a device, not by the author's
signature: they may be written in English, French, Dutch, or German,
and are to be sent addressed--_Felix Meritis_, Amsterdam, before May
1, 1853. The Society reserve to themselves the right of publishing the
successful paper at their own cost.

SONNET:

ON OVERHEARING A LITTLE CHILD (A VISITOR) SAYING
'MAMMA' IN THE NEXT ROOM.

Hark! through the wall it comes! and to my ear
It sounds the sweetest of all silvery tones,
So soft, yet syllabled distinct and clear,
'Mamma!'--and happy she the name who owns!
Nor would I all suppress this starting tear,
Which blinds me, while, that infant's voice I hear!
Say it again, fair child; I like it well,
Although I sit alone, within my room,
Like hermit-hearted man within his cell.
It wakens Reminiscence, like a bell;
And summons up a vanished Form most dear,
Which, long years since, I laid within the tomb!
Strange, that a simple sound should reach so deep,
And flood my heart with thoughts, and make me weep!