Evening star. [volume] (Washington, D.C.) 1854-1972, 1932-06-13
ANSWERS TO QUESTIONS
BY FREDERIC ]. HASKiN,

cabbage and slaw Is from the Danish
slaa, meaning salad
@. Please tell something about the
life OF the Samo.-W. M
A. They are a tall, robust looking
people inhabiting the borders of Upper
Volta and the French Sudan. Their
language. apparently related to STA, is
still little known. Marriage Is restricted
within the village, but must be outside
the extended family group. In case Of
a divorce the children remain with the
father Family property passes to the
brother OF the deceased and personal
goods, or individual property, is inherit
ed by the eldest son. They are animists
and perform seasonal sacrifices and Wor-
ship sacred animals protecting the
villages.
@ Is it possible to take a trip to
Europe and pay for it on the INSTALL
ment plan after a person returns?
ID. TN
A. This plan is being offered by one
or more steamship lines. 1t includes
only the steamship fare, however, and
about onefourth Of this must be paid
in advance.
@ Will you kindly advise if
patented article or piece of machinery
can be built Tor your own use and by
you without the permission of the
patentee without infringing on the
patent rights of patent holder?-
E. MD
A. According to the case, johnson vs.
Brick g. Tile Co.. 237 Fed. at s.,
quoting l Rogers on Patents, 1877. In
fringement is the unauthorized making.
using or selling for practical use or for
profit OF an invention covered by a
valid claim OF patent during the life
Of the patent. 1t may involve any one
or all of the acts Of making, using and
selling. 1t is therefore an infringement
for an unauthorized person to make a
patented machine for use or for sale.
though in fact it is neither used nor
sold"
Q. How does wood become petrified?
S. McF.
A. When wood or other vegetable
matter Is buried in soil charged with
petrifying material. 1t becomes satu-
rated with it and the cells filled with
irfiltrated matter. When the wood de-
Gays the petrifying material is left. re-
tanning the structure of the wood The
most common petrifying materials are
silica. carbonate of lime and sulphide
Of iron.
@. How many establishments in this
country use welding?-E. D. @.
A 1t has been estimated that the
process Of welding enters into the pro-
duction system of at least IS 900 manu-
featuring establishments in this coun-
try, including steel plants, ship yards.
foundries. automobile plants, railroad
shops, airplane plants, boiler and tank
shops and other establishments pro-
ducing metal products.
@. What is the size of the police
force in Washington, D. C.?-J. r. c.
A. The Washington Police Force has
l,34l members. At the present time
there are II precincts, one harbor pre-
cinct. three bureaus and three district
headquarters. There are % radio
equipped scout cars, four squad cars
and 50 motorcycles
Q. Where was the Mason and Dixon's
Line?-E. S. A.
A. Mason and Dixon's Line is the
popular name of the boundary line sur
veyed between November Is, 1863. and
December 26, 1857, by two English
mathematician and surveyors, Charles
Mason and jeremiah Dixon, to settle
the constant dSSenSionS between the
Lords Baltimore and the Penn family,
The lords proprietors of Maryland and
Pennsylvania, respectively. 1t runs along
the parallel in latitude 80 degrees AZ
2.3", and was originally marked by mile
stones, every fifth one bearing on one
side the coat of arms of Penn and on
the other those of Lord Baltimore. The
name was afterward currently applied
to designate an imaginary boundary
line between the free and the slave
States.