of this article, Buxtorf
edited the great _Lexicon Chaldaicum, Talmudicum, et Rabbinicum_, on which
his father had spent the labour of twenty years, and to the completion of
which he himself gave ten years of additional study; and the great Hebrew
_Concordance_, which his father had little more than begun. In addition to
these, he published new editions of many of his father's works, as well as
others of his own, complete lists of which may be seen in the _Athenae
Rauricae_ and other works enumerated at the close of the preceding article.

BUYING IN, on the English stock exchange, a transaction by which, if a
member has sold securities which he fails to deliver on settling day, or
any of the succeeding ten days following the settlement, the buyer may give
instructions to a stock exchange official to "buy in" the stock required.
The official announces the quantity of stock, and the purpose for which he
requires it, and whoever sells the stock must be prepared to deliver it
immediately. The original seller has to pay the difference between the two
prices, if the latter is higher than the original contract price. A similar
practice, termed "selling out," prevails when a purchaser fails to take up
his securities.

BUYS BALLOT'S LAW, in meteorology, the name given to a law which may be
expressed as follows:--"Stand with your back to the wind; the low-pressure
area will be on your left-hand." This rule, the truth of which was first
recognized by the American meteorologists J.H. Coffin and W. Ferrel, is a
direct consequence of Ferrel's Law (_q.v._). It is approximately true in
the higher latitudes of the Northern Hemisphere, and is reversed in the
Southern Hemisphere, but the angle between barometric gradient and wind is
not a right angle in low latitudes. The law takes its name from C.H.D. Buys
Ballot, a Dutch meteorologist, who published it in the _Comptes rendus_,
November 1857.

BUZEU, the capital of the department of Buzeu, Rumania, situated near the
right bank of the river Buzeu, between the Carpathian Mountains and the
fertile lowlands of south Moldavia and east Walachia. Pop. (1900) 21,561.
Buzeu is important as a market for petroleum, timber and grain. It is the
meeting [v.04 p.0895] place of railroads from Ramnicu Sarat, Braila and
Ploesci. Amber is found by the riverside, and there are cloth-mills in the
city. Buzeu is the seat of a bishop, whose cathedral was erected in 1640 by
Prince Matthias Bassarab of Walachi