NOTE. 
The eight parts of volume 17 of the Contributions were issued on 
the following dates: 
Part 1, pages 1 to 132, June 9, 1913. 
, Part 2, pages 133 to 180, June 20, 1913. 
Part 3, pages 181 to 390, July 15, 1913. 
Part 4, pages 391 to 426, January 21, 1914. 
Part 5, pages 427 to 458, January 30, 1914. 
Part 6, pages 459 to 540, July 24, 1915. 
Part 7, pages 541 to 608, May 23, 1916. 
Part 8, pages 609 to 626, June 28, 1916. 
lV 
