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NOTE. 
The three numbers of Volume VII of the Contributions were published as follows: 
No. 1, pp. 9 to 256, December 31, 1900. 
No. 2, pp. 257 to 293, September 24, 1901. 
No. 3, pp. 295 to 408, January 24, 1902. 
Pages 1 to 8, and 409 to 422 were issued August 23, 1902. 
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