Examples: 



Al. 1:901 = Agriculture Dept., Sccj'^'.s Office, annual report, 1901. 



Al. 1:902 =Same, 1902. 



A1.2: = Agriculture Dept. , Sec3''.s Office, general publications. 



A1.2:AnJ:= Angora. Notice of receipt of letter from Min- 

 ister Terrell, relating to agriculture in Angora. 

 November 1, 1893. (Circ.) 



A1.2:L48 = Leave of absence not allowed to emploj^ees out- 

 side of Washington. October 21, 1890. (Circ.) 



N6.8: = Navy Department, llydrographic Office, publications 

 (numbered). 



NO. 8:3 = [No. 3.] List of reported dangers to navigation 

 in Pacific Ocean, whose positions are doubtful, 

 or not found on charts in general use. 1866. 

 191 pp. 



N6.8:40 = No. 40. Steam lanes across Atlantic; [by M. F. 

 Maury.] 1872. 19 pp. 3 pi. 



T14.5: = Treasury Department, Second Comptroller, decisions, 

 digest of. 



T14.5:l = Volume 1. Compiled by George Chipman. 1852. 



T14.5:2 = Volume 2, 1869-1884; compiled by R. J. Mitchell. 

 1885. 433 pp. 



Superior letters and figures. 



Two other ver}^ useful features of the classification need some 

 explanation, namel}^ the use of the superior letter a (*), and the 

 superior figures (^~"). 



The superior letter always designates excerpts from the publication 

 bearing the same notation without the ("). The name adopted for 

 these excerpts is "separates," and they are always designated b}^ the 

 superior ("), These " separates " arc arranged in classes \)y themselves, 

 immediatel}' following the series from which they are taken. In cases 

 where the separates are from an annual report series it has often been 

 found necessary to make two classes. The personal report of the chief, 

 which usuall}' appears in pamphlet form without the accompanying 

 documents, is arranged and book-numbered by dates. The other class, 

 scientific reports accompanying the report of the chief, is arranged 

 alphabetically on the same plan as the "general publications." 

 Examples: 



A 1.1:901 = Agriculture Department, Secretary's Office, annual 



report, 1901. 

 Al.L':9ol = Agriculture Department, Secretary's Office, annual 

 report, 1901 (separate). 



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