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tions, and also the monthly advance sheets. Any cases found 
in the digest paragraphs should be examined in the original, 
since the digest paragraphs are only the headnotes of the 
cases. Theoretically a searcher should find any judicial prec- 
edents in point, whichever one of the American Digest 
methods he pursues, but practically it is sometimes very diffi- 
cult, if not impossible, to follow the trail of the digester, as 
for example, when he digests the second child labor decision 
under internal revenue. Hence the searcher should not give 
up if he does not find the materials which he needs by follow- 
ing the two methods outlined above, but should also employ 
the other methods of search outlined in this chapter. 
State Digests. If the searcher’s problem involves the law 
of a particular state, he should examine the digest of that 
state, if any ; and it may be advisable to examine the available 
digests of all the states if pertinent material cannot be found 
in the American Digest System. State digests are generally 
built on the plan of either the American Digest System or on 
the plan of Corpus Juris-Cyc, and the schemes of search ap- 
plicable to them can be applied to state digests. 
English Digests. In using the English digests the searcher 
should not use the descriptive word method but the scheme 
of classification method, and should familiarize himself with 
the particular scheme of classification employed by each digest, 
and with the equivalent English words used for certain United 
States words, as ‘‘company” for “corporation”, “local govern- 
ment” for “municipal corporations”, and “land clauses act” 
for “eminent domain.” 
Selected Cases. In searching for materials in the various 
selections of cases known as American Decisions, American 
Reports, American State Reports, American and English An- 
notated Cases, American Annotated Cases, English Ruling 
Cases, Lawyers’ Reports Annotated, United States Supreme 
Court Reports (Lawyers’ Edition), British Ruling Cases, and 
American Law Reports Annotated, the searcher should use the 
separate digest or index digest of each series which is built 
on the descriptive word plan, or Ruling Case Law which is a 
digest built on the encyclopedic plan for all cases and annota- 
tions in all of the series up to January 1, 1923. 
Citation Books. For the subsequent history of the cases 
which the searcher has found in textbooks, encyclopedias, 
