NOTE. 
The ten parts of Volume XII of the Contributions were issued as 
follows: 
Part 1, pages 1 to 94, April 28, 1908. 
Part 2, pages 95 to 112, May 20, 1908. 
Part 3, pages 113 to 158, June 18, 1908. 
Part 4, pages 159 to 170, October 6, 1908. 
Part 5, pages 171 to 182, January 27, 1909. 
Part 6, pages 183 to 258, March 23, 1909. 
Part 7, pages 259 to 302, April 12, 1909. 
Part 8, pages 303 to 390, April 23, 1909. 
Part 9, pages 391 to 412, May 10, 1909. 
Part 10, pages 413 to 456, July 21, 1909. 
IV 
Ve 
