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 &quot; Pilgrim Memories.&quot; 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 &quot; Stuart-Glennie,&quot; 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 &quot; Glennie&quot; to &quot; Stuart-Glen 

 nie,&quot; else some one, remembering only the last 

 half of the name, would look in vain for &quot; Glen 

 nie,&quot; and conclude that the book was not in the 

 library. 



Suppose, again, that your book is Jevons on 

 &quot; Money and the Mechanism of Exchange.&quot; This 

 belongs to the &quot; International Scientific Series,&quot; 

 and therefore needs to be entered under &quot; Jev 

 ons,&quot; and again on the general card which bears 

 the superscription &quot;International Scientific Se 

 ries.&quot; 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- 



