Willis : Anglo-American Law 
213 
digests, and series of selected cases and of which he should 
at some time make an abstract on his case cards, the searcher 
should consult the books of notes on reported cases, the tables 
of cases reported, cited, overruled, etc., and the citators; and 
for the history and construction of acts of Congress, the Citer 
Digest. 
Periodicals. To find periodical material the searcher must 
search the indexes of separate periodicals, Jones' Index, and 
the Index of the Association of Law Libraries for char- 
acteristic titles and descriptive words and phrases as in the 
other books heretofore discussed. 
Table of Cases. Whenever it is necessary for the searcher 
to look up any or all of his cases on his case cards, either for 
the purpose of abstracting them or to eliminate those of no 
worth, he will find it profitable to use the appropriate table 
of cases available. The First Decennial Table of Cases, com- 
mencing with volume 21 and running thru five volumes, is the 
most complete table of American cases and covers the cases 
decided from 1658 to 1906. 
Analysis of Unit Operations and Analysis of Distinctive 
Jobs in Legal Bibliography. Immediately following is printed 
the material upon these two topics prepared by Dean John H. 
Wigmore. It is believed that this material covers all the 
operations used in the finding of authorities, and that the 
student who will solve the problems therein given, with the aid 
of the hints heretofore supplied and with such other incidental 
information as he will acquire in working on them, will ac- 
quire a mastery of the art of using law books so far as it 
relates to finding authorities. 
LEGAL BIBLIOGRAPHY 115 
ANALYSIS OF UNIT OPERATIONS 
By John H. Wigmore 116 
I. General Purpose : 
To qualify a young lawyer with adequate skill to make practical use of all 
the printed sources of law ordinarily resorted to in professional practice. 
115 Dean Wigmore has kindly consented to the incorporation in this study of both 
his Analysis of Unit Operations and his Analysis of Distinctive Jobs in Legal Bibliog- 
raphy. They are published here for the first time. 
116 Dean and professor of law. Northwestern University Law School. 
