CONTENTS. 



Number 189. 



Page 



Art. XIX. — The Probable Influence of the Soil on Local 



Atmospheric Radioactivity ; by J. C. Sanderson 169 



XX. — Mineralization of the Gold-bearing Lode of Passagem, 



Minas Geraes, Brazil ; by O. A. Derby 185 



XXI. — A Notable Brazilian Diamond ; by O. A. Derby 191 



XXII. — Association of Rutile and Cyanite from a New 



Locality; by T. L. Watson and J. H. Watkins 195 



XXIII. — Seventh Paper on the Heat of Combination of 



Acidic Oxides with Sodium Oxide ; by W. G. Mixter._ 202 



XXIV. — Rates of Solution of Certain Metals in Dissolved 

 Iodine, and their Relation to the Diffusion Theory ; by 

 R. G. Van Name and R. S. Bosworth 207 



XXV. — Cross-bedding and Absence of Fossils Considered as 



Criteria of Continental Deposits; by E. M. Kindle 225 



XXVI. — Detection of Sympathetic Vibrations of Small 



Amplitude by Interference Methods ; by J. S. Stevens 231 



SCIENTIFIC INTELLIGENCE. 



Geology — Kristallinen Schiefer des Laacher Seegebietes und ihre Umbildung 

 zu Sanidinit, R. Brauns : British and Foreign Building Stones, J. 

 Watson, 232. — Kontaktmetamorphose im Kristianiagebiet, V. M. Goed- 

 schmidt, 233. — Grundziige der Palaontologie (Palaozoologie), K. A. von 

 Zittel, 234. 



Miscellaneous Scientific Intelligence — Les Sommes des Piemes Puissances 

 Distinctes Egales a une Pieme Puissances, E. Barbette, 234. — The Gram- 

 mar of Science, K. Pearson, 235. — Marriage, Totemism and Religion, 

 Lord Avebury : Smithsonian Physical Tables, F. E. Fowle : Royal 

 Academy of Sciences of Turin : Catalogue of the Lepidoptera Phalaense 

 in the British Museum : Bureau of American Ethnology, Smithsonian 

 Institution : The Sarawak Museum Journal : Eighth Annual Report 

 Rhodesia Museum, 236. 



