A l^ 1^ L I : T () N S ' S P R I N G BULLETIN 



measuring 30^^ by 41 inches. If placed end to end the books would extend 

 over a horizontal route for about fifty miles. If placed one upon the other they 

 would make a tower seven miles high. And so the interesting axioms might be 

 multiplied. But perhaps the greatest achievement is the part played by the plates 

 from which the book is being printed. Only one set has been used to print the 

 425,000 copies. Over a year ago, when certain signs indicated that 'David 

 Harum ' was fast winning an extraordinary popularity, a second set of electrotype 

 plates was cast, to be used in case of emergency ; but so well has the printer done 

 his work that this set has not as yet been pressed into service." 



The second volume of Herbert Spencer's The 

 Principles of Biology, which has been reset and 

 revised, like the first, recognizes the rapid progress of 

 biology in recent years. New chapters and three new 

 appendices, with other addidons, have increased 

 Volume I to 706 pages. A new chapter and sec- 

 don, many new notes, and various other changes are 

 presented in Volume II. This is the final and defini- 

 tive edidon of The Principles of Biology. The 

 revision and augmentadon of this second volume have HERBERT spencer. 



occupied the last few years of this learned and dis- 

 tinguished man, who has almost attained the age of fourscore years. It was 

 in 1867 that this work was first brought out. Mr. Spencer has kept accu- 

 rate pace with the changes in this great field, and in the preface to his revised edi- 

 don, written under date of October, 1899, he says, "On now finally leaving 

 biological studies, it remains only to say that I am glad I have survived long 

 enough to give this work its finished form." The Brooklyn Eagle, in referring to 

 the completion of the revision -of this great work, says: "While the publication of 

 a definitive edition of this great work is the event that will hold the attention of 

 the student and the scientist, the public, less concerned, perhaps, with the science, 

 will note with interest and wonder the spectacle of this venerable philosopher and 

 man of letters persisting, even to the age of fourscore, in that mental activity 

 which has helped to give him a deathless place on the roll of the world's 

 savants." 



The International Geography, recently published by D. Appleton and Com- 

 pany, presents the authoritative descriptions and statements of a most remarkable 

 group of geographical experts. The Right Hon. James Bryce, who writes of the 

 Boer Republics, Sir W. M. Conway, Prof. W. M. Davis, Prof Argelo Heil- 

 prin. Prof. Fridtjof Nansen, Dr. J. Scott Keltic, and F. C. Scions are among the 

 seventy specialists whose contributions make up this important volume. The last 

 few years have proved so rich in geographical discoveries that there has been a 

 pressing need f)r a r'sumf of recent explorations and changes which should pre- 



