IV CONTENTS. 



NumTDer 272. 



Page 

 Art. XIII. — The Melting Points of Oistobalite and Tridy- 



mite; by J. B. Ferguson and H. E. Merwin 417 



XIV. — The Application of Rapidly Rotating Metallic Re- 

 ductors in the Determination of Vanadic Acid; by F. A. 

 Gooch and W. Scott ._ 427 



XV. — Notes on the Geology of Rhode Island; by A. C. 



Hawkins 437 



XVI. — A Possible Source of Vanadium in Sedimentary 



Rocks ; by A. H. Phillips 473 



Geology and Mineralogy — Fossil Plants: a text-book for students of Botany 

 and Geology, A. C. Seward, 475.— The Cedar Mountain Tiap Ridge near 

 Hartford, W. M. Davis. 476. —Canada Department of Mines, 477. — Con- 

 tributions to the Mineralogy of Black Lake Area, Quebec, E. Poitevin 

 and R. P. D. Graham, 479. 



Miscellaneous Scientific Intelligence — Field Museum of Natural History, F. J. 

 V. Skiff: The Sarawak Museum Journal, 479. — The Normal and Patho- 

 logical Histology of the Mouth, A. Hopewell-Smith : Helvetica Chimica 

 Acta, 480. 



Obituary— W. E. Hidden: A. Pedler, 480. 



