(Continued from page 3 of cover. J 



VOLUME 58. 



1. Ames, A. Jb., Proctor, C. A., and Ames, Blanche. — Vision and the Technique of Art. 



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2. Birkhoff, George D. and Langer, Budolph E. — The Boundary Problems and Develop- 



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3. Vainio, Edward A. — Lichenes in Insula Trinidad a Professore B. Thaxter Collecti. 



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4. Bkidgman, P. W. — The Effect of Pressure on the Electrical Besistance of Cobalt, Alumi- 



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5. Bridgman. P. W. — The Compressibility of Thirty Metals as a Function of Pressure and 



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6. Baxter, Gregory P., Weatheaill, Philip F. and Scripture, Edward W., Jr. — A 



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7. Evans, Alexander W. — The Chilean Species of Metzgeria. pp. 269-324. March, 



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8. Bbues, Charles T. — Some New Fossil Parasitic Hymenoptera from Baltic Amber. 



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9. Kennelly, A. E. — Text of the Charter of the Academie Boyale de Belgique, Trans- 



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10. Hitchcock, Frank L. — On Double Polyadics, with Application to the Linear Matrix 



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11. Hitchcock, Frank L. — Identities Satisfied by Algebraic Point Functions in N-Space. 



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12. Swan, Clifford M. — The Minimum Audible Intensity of Sound, pp. 423-441. 



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