ll then be
taken out of file and compared with the ridge detail on the finger of
the deceased in an endeavor to establish a positive identification.
Many such identifications have been effected.

In conjunction with the usual services afforded authorized law
enforcement agencies, the services of an FBI fingerprint expert are
also made available in those cases where expert testimony is necessary
to establish the identity of the deceased through fingerprints,
providing, of course, such an identification has been made.

Extreme caution should be exercised in the case of the chemicals
previously mentioned in this article. Acetone, alcohol, benzine, and
xylene are highly inflammable and should neither be used near open
flames nor while the operator is smoking. The fumes given off by
acetone, benzine, xylene, and formaldehyde are toxic and may cause
sickness. They should be used in a well-ventilated room only. It is
also suggested that the fingerprint examiner wear rubber gloves when
using acetone, benzine, xylene, formaldehyde, potassium hydroxide, or
sodium hydroxide. These chemicals will cause the skin to peel. Strong
concentrations may cause burns.

In conclusion, it is pointed out that the procedures and techniques
which have been described are those currently being used by the
fingerprint experts of the FBI. These methods are fast and the results
have been most satisfactory. This Bureau does not claim, however, that
satisfactory results cannot be achieved through variations thereof or
different methods.

CHAPTER XI

_Establishment of a Local Fingerprint Identification Bureau_

For the information and assistance of officials who desire to
establish a local fingerprint identification bureau, the following
suggestions are being made to indicate the principal materials
necessary to equip such a bureau:

_Fingerprinting equipment_

For the purpose of taking fingerprints there should be a stand with a
clamp for holding the fingerprint cards steady. This latter item is
necessary to prevent smudging the prints. A tube of printer's ink is
used. The ink is applied by a roller to a glass plate upon which the
fingers are inked before being rolled on the cards. The complete
equipment for the above process may be secured from a number of
commercial sources or it can be made. Figure 408 depicts an inking
stand.

_Fingerprint files_

It is suggested that the fingerprint card be white, light cardboard, 8
by 8