more ways than one.

Various scientific matters, which are deserving of a passing notice,
have come before the same learned body. Matteucci, who has been
steadily pursuing his electro-chemical labours, now states that with
certain liquids and a single metal he can form a pile, the
electro-magnetic and electro-chemical effects of which are much
greater than those obtained with the old piles of Volta and Wollaston,
and come nearer to those of the batteries of Bunsen and Grove. As yet,
he withholds the particulars, but they will shortly be forthcoming. M.
Dureau de la Malle, in remarks on the breeding of fish, a subject
which has of late occupied much attention in France, says, that he has
now discovered the reason 'why domestic servants in Holland and
Scotland, when taking a situation, stipulate that they shall not be
made to eat salmon more than three times a week;' it is, the insipid
taste of young salmon. It is safe to say, that however much M. de la
Malle may know about fish, he knows but little of the habits of the
countries to which he refers. M. Yvart mentions a fact that may be
useful to graziers--the breed of cattle has been improved in France by
the introduction of the Durham bull; but, as experience has shewn, it
is at the expense of certain qualities deemed essential on the other
side of the Channel. Here, we require meat as speedily as possible in
young animals for consumption in our great towns; there, the great
rural population use milk largely, and keep the animals longer before
they are killed. The quantity of milk, it appears, is materially
reduced in the Durham breed, and on this account M. Yvart suggests,
that it should not be too much encouraged. Then there is something
about dogs by Messrs Gruby and Delafond, who shew that the worms which
have long been known to exist in the larger blood-vessels of certain
dogs, are the parents of the almost innumerable _filaria_ or
microscopic worms, found circulating also in the veins. The number
generally in one dog is estimated at 52,000, though at times it is
more than 200,000; and being smaller than the blood-globules, the
creatures penetrate the minutest blood-vessels. They are met with on
the average in one dog in twenty-five, though most frequent in the
adult and old, and without distinction of sex or race. The examination
of the phenomenon is to be continued, with a view to ascertain whether
dogs infested with these blood-worms are subject to any peculiar