Quote:
Criminal identification by means of fingerprints is one of the most potent factors in obtaining the apprehension of fugitives who might otherwise escape arrest and continue their criminal activities indefinitely. This type of identification also makes possible an accurate determination of the number of previous arrests and convictions, which of course results in the imposition of more equitable sentences by the judiciary, in as much as the individual who repeatedly violates the law finds it impossible to pose successfully as a first or minor offender. In addition, this system of identification enables the prosecutor to present his case in light of the offender’s previous record. It also provides the probation officers, parole board and the governor with definite information upon which to base their judgement in dealing with criminals in their jurisdictions.
From earliest times, fingerprinting, because of its peculiar adaptability to the field has been associated in the lay mind with criminal identification to the detriment of the other useful phrases of the science. However, the Civil The file of the Identification Division of the Federal Bureau of investigation contains three times as many fingerprints as the Criminal File. These civil fingerprints are an invaluable aid in identifying amnesia victims, missing persons, and unknown deceased. In the latter category, the victims of major disasters may be quickly and positively identified if their fingerprints are on file, thus providing a humanitarian benefit is not usually associated with fingerprint records.
The use of fingerprints for identification purposes is based upon distinctive ridge outlines which appear on the bulbs on the inside of the end joints of the fingers and thumbs. These ridges have definite contours and appear in several general pattern types, each with general and specific variations of the pattern, dependent on the shape and relationship of the ridges. The outlines of the ridges appear most clearly when inked impressions are taken upon paper so that the ridges are black against a white background. This result is achieved by the ink adhering to the friction ridges. Impressions may be made with blood, dirt, grease or any other foreign matter present on the ridges, or the saline substance emitted by the glands through the ducts or pores which constitute their outlets. The background or medium may be paper, glass, porcelain, wood, cloth, wax, putty, silverware or any smooth, non-porous material.
4. According to the information in the passage, the impressions of the fingerprints can be obtained from all of the following, EXCEPT:(A) Saline substances
(B) Ink
(C) Grease
(D) Wax
(E) Perspiration
The passage discusses the importance of fingerprinting for criminal and civil identification. It explains that fingerprints are useful for identifying repeat offenders, assisting prosecutors, and helping in humanitarian cases like identifying disaster victims. It also describes how fingerprint impressions are created by the transfer of substances, like ink, grease, or natural skin secretions, onto a surface, and lists various surfaces that can retain prints.
The question asks which item is
NOT listed in the passage as something from which fingerprint impressions can be obtained. The key part is in the third paragraph, which states that impressions may be made
with substances on the ridges (like blood, dirt, grease, saline substance) and
on various background materials.
(A) Saline substances - The passage explicitly says impressions can be made with "the saline substance emitted by the glands." This is a source.
(B) Ink - The passage describes taking "inked impressions upon paper." Ink is used to create the impression.
(C) Grease - Grease is listed as one of the foreign matters on the ridges that can make an impression.
(D) Wax - Wax is mentioned only as a possible background material ("the background or medium may be paper, glass, ... wax..."). It is
not listed as a substance on the ridges that leaves an impression.
(E) Perspiration - Perspiration is the saline substance mentioned in the passage, so it is included.
So, the passage lists substances that can create an impression
from the ridges. Wax is only listed as a surface
on which an impression can be left, not as a substance that comes from the ridges to form the impression. Therefore,
wax is the exception.
Answer: (D)