348 Darwinism and Other Essays. 



than one, and some books need a great many. 

 Suppose you have to catalogue Mr. Stuart-Glen- 

 nie's newly-published " Pilgrim Memories." This 

 is an exceedingly easy book for the cataloguer, 

 but it requires two cards, because of the author's 

 compound name. The book must be entered 

 under " Stuart-Glennie," because that is the form 

 in which the name appears on the title-page, and 

 which the author is therefore supposed to prefer. 

 It is very important, however, that a reference 

 should be made from " Glennie " to " Stuart-Glen- 

 nie," else some one, remembering only the last 

 half of the name, would look in vain for " Glen- 

 nie," and conclude that the book was not in the 

 library. 



Suppose, again, that your book is Jevons on 

 " Money and the Mechanism of Exchange." This 

 belongs to the " International Scientific Series," 

 and therefore needs to be entered under "Jev- 

 ons," and again on the general card which bears 

 the superscription "International Scientific Se- 

 ries." Without such a general entry, books are 

 liable to be ordered and bought under one head- 

 ing when they are already in the library and cata- 

 logued under the other heading. The risk of 

 such a mishap is small in the case of the new and 

 well-known series just mentioned, but it is con- 



