CONTENTS. 



Page 



I. On the Ultra Violet Component in Artificial Light. By Louis 



Bell 1 



II. Alexander Agassiz. By Henry P. Walcott 31 



III. A Theory of Linear Distance and Angle. By H. B. Phillips 



and C. L. E. Moore 45 



IV. Preliminary Diagnoses of New Species of Chaetomium. By A. 



H. Chivers 81 



V. A Study ivith the Echelon Spectroscope of Certain Lines in the 

 Spectra of the Zinc Arc and Spark at Atmospheric Pressure. 

 By Norton A. Kent 91 



VI. The Impeda?ice of Telephone Receivers as affected by the Motion 



of their Diaphragms. By A. E. Kennelly and G. W. Pierce 111 



VII. N ew or Critical Laboulbeniales from the Argentine. By Roland 



Thaxter- 155 



VIII. Culture Studies of Fungi producing Bulbils and Similar Propaga- 



tive Bodies. By' J. W. Hotson 225 



IX. Thermodynamic Properties of Liquid Water to 80° and 12000 



Kgm. By P. W. Bridgman 307 



X. Preliminary Descriptions of New Species of Rickia and Treno- 



myces. By' Roland Thaxter 363 



XI. The Space-Time Manifold of Relativity. The Non-Euclidean 

 Geometry of Mechanics and Electromagnetics. By E. B. 

 Wilson and G. N. Lewis 387 



XII. On the Existence and Properties of the Ether. By D. L. Webster 509 



XIII. The History, Comparative Anatomy and Evolution of the Arau- 



carioxylon Type. By E. C. Jeffrey 531 



