The San Francisco call., 1895-11-25
ANSWERS TO CORRESPONDENTS.

to America.
ANSWERS TO CORRESPONDENTS.
CAvEAr-w. C. L., City. A caveat is descrip-
tion of the invention to be patented, lodged IN
the Patent Office before the patent is applied
for, and while the inventor is perfecting his de-
sign. 1t remains in force for one year after
filing, and may be extended, If desired, by
paying renewal fee. The object of a caveat
is 10 give the inventor time to perfect and test
his invention or discovery. 1t often occurs
that an inventor will conceive the general
idea OF an important invention. but is not able
to test it or to complete the details sufficiently
10 apply at once for a patent If a caveat is
hled. In such case the caveator will receive
nonce II any application is made for patent
LOT similar invention, and three months will
be given him to complete his invention and
apply Tor a patent An interference Will then
be declared and the first inventor will receive
patent. In such case the caveator has the
| advantage of having his invention first upon
the books cf the Patent Office, and in the alb
sence of other proof this would decide the case
in his favor. Caveats can only be filed by citi-
Zens of the United States, or those who have re-
sided in the United States one year and have
declared their intention to become citizens.
All caveats are kept entirely secret in the de-
partment to which they belong. In applying
great care. Application should be made 10 8
reliable patent agency. The expense OF caveat,
including Government ana agency ices and
drawings, is $25.
liz,
Leg islature, passed at the session of 1893,
that allows prisoners to be released on parole
from the penitentiaries of this State. Applica-
ton must be made to the Board of Parole, and
If the body is OF the opinion that 1t would be
for the best interests OF the prisoner ana OF the
community that the prisoner should be al
lowed to be released IL will allow him to go.
The application must contain the name OF the
prisoner, the crime of which he was convicted,
tel IN of sentence, time served end the reasons
for asking for his release on parole.
HEcToGRAPH AND INK-E. G. p, San Jose,
Cal. The composition used in photographs
was described in THE CALL of Tuesday, Novem-
ber IL, in Answers to correspondents. The
following is the composition of the ink used
for photographs: ounce of aniline, violet or
and ON cooling add 1 ounce of wine spirits
with ID ounce of glycerine, few drops OF ether
and a drop of carbolic acid. Keep the ink in a
well-stoppered bottle.
TALL BU1LDINes-Subscriber, Alameda, Cal.
Any ordinance that the Board OF Supervisors
of this City ana County may pass in regard to
the height of buildings to be erected in this
City cannot effect the building that is being
erected for THE CALL, as that building is in
course Of construction and retroactive laws
may do in that direction will apply only to
buildings to be erected after the passage of the
ordinance.
MINERAL DEMONSTRATION, Alameda, Cal.
prospector may enter on any vacant Govern
ment land for the purpose of prospecting, but
if he desires to locate land in which he dis
covtr rs good prospects he must make applica-
ton at the land office of the district. A pros-
pector is not allowed to enter upon private
lands without the consent of the owner.
CALIFORNIA EDIToRs-Mrs. F. A, City. At the
Office of either of the newspaper agencies in
the Merchants Exchange building in this City
you can examine a copy of directory of all
the newspapers published in this State and on
the Pacific Coast, and this contains the names
of editors.
CHILD-DANCER-"Dancer," City. Little Tues
day, the child-dancer who appeared at the Cali
fornia Theater some time ago, is probably the
youngest child that ever danced on a stage in
this City. She was at that time under years
of age.
MININe-T. A. McC., Gonzales, Monterey
County, Cal. If you hold deed to a piece of
property no one has the right to enter upon
that property for the purpose of mining for
metals. or for any other purpose, without your
consent.
UNITED STATES CoURTs-G. A. R., San Jose, Cal
The United States courts are not divided into
departments as are the Superior Courts of the
State. Thomas p. Hawley is District Judge
and Judge Of the United States Circuit Court
of AVN