TO THE OWNER OF THIS YEAR-BOOK 



THE Britannica Year-Book has for its province the temporary 

 aspects of the world's life. It affords information that holds 

 for the current phases of things. The Encyclopaedia Britannica 

 (Eleventh Edition) deals with the vastly wider realm of knowledge 

 and information that has withstood the test of time. It supplies 

 the basis on which the new information, the new developments, the 

 substantial progress of the present year must rest, that great account 

 to which the new acquisitions are but small additions in the sum 

 total of the things men know and by which their actions in the 

 present are inevitably guided. 



What the Britannica Year-Book does for the 

 limited section of knowledge affected by a year's 



A description 



* changes the Encyclopedia Britannica does for the 



Encyclopaedia 

 Britannica is 

 printed as an 

 advertisement 

 at the back of 

 the Year-Book 



whole vast range of human thought and achieve- 

 ment throughout all history. The 29 volumes of 

 the Encyclopaedia are indispensable as an interpre- 

 tation and survey of the vast masses of facts lying 

 behind the events of the day to which the new 

 information contained in the Year-Book must 

 necessarily continually refer, because all history, all development, is 

 continuous, and a fact that comes into prominence to-day, a new step 

 in the evolution of knowledge, cannot be isolated from the facts that 

 went before and are a part of the heritage from the preceding age. 



These two books, products of the modern spirit of efficiency, 

 the Britannica Year-Book and the Encyclopedia Britannica, 

 spring from a common impulse and are part of a single plan, executed 

 by the same international organization of authorities. They attain 

 their greatest usefulness when serving together, each, as the com- 

 plement, or companion, to the other, and it is especially the Year- 

 Book reader who by his tastes and requirements will best appre- 

 ciate the invaluable services which the Encyclopedia Britannica 

 can render and whose need for this work is most pressing. 



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