THE WOOD PAVING. 109 
beet-root and potatoes alone are not sufficient to nourish milking 
cows. 
The diet of milking cows, says M. Boussingault, may be insuf- 
ficient from different causes — 1st, if it does not contain enough 
azotized principles to supply the place of the azotized principles 
eliminated from the economy ; 2d, if it does not contain the carbon 
necessary to replace that which is burnt by the respiration or 
emitted by the secretions; 3d, if it does not contain the salts re- 
quired by the economy ; 4th, if it does not contain (according to 
views recently promulgated) enough fatty substances to supply the 
place of those which are carried off by the milk and other secretions. 
In the food given to the cows experimented on, the first three 
conditions were fulfilled, but the last was not, as the quantity of 
the fatty principles which it contained was much inferior to that 
which was found in the milk and dejections. Consequently, the 
food of herbivorous animals, says M. Boussingault, ought always to 
contain a certain number of substances analogous to fat, destined 
to assist in forming the fat of the tissues, and of the secretions. 
THE VETERINARIAN, FEBRUARY 1, 1815. 
Ne quid falsi dicere audeat, ne quid veri non audeat. — C icero. 
It appears a singular contradiction of things, in the times in 
which we live, that, while the English people pride themselves in 
being the greatest horse nation in the world, men who use horses 
for riding and driving in the course of their daily occupations 
and recreations, more, perhaps, than those of any other country, 
have actually paved, or suffered to be paved, many of the prin- 
cipal streets of their vast metropolis with a material which, in wet 
weather, horses can seldom travel upon without the danger of 
slipping and falling, and in frosty weather horses can hardly 
maintain their footing upon at all. Riding upon an omnibus the 
other day, in the course of conversation with the driver, we learned 
that, early that very morning, which happened to have been a frosty 
one, Newgate-street — perhaps one of the worst paved streets in 
London for horses’ tread — was literally strewed with horses that had 
slipped down. Such was the state of the surface of the wooden pave- 
ment, that it was next to impossible for even cab and omnibus horses 
— and they, like cats, can stand upon almost any thing — to work 
upon it. A foreigner, visiting for the first time our great metro- 
polis, and beholding such a scene as this, might, knowing our 
VOL. XVIII. Q 
