TABLE OF CONTENTS. 
ON THE UNIVERSAL DISTRIBUTION OF TITANIUM. ; 
Charles DPasrerville . ::..-......2....,000 ee 52 
THE OCCURENCE OF VANADIUM, CHROMIUM AND TITANIUM IN PREATS. 
Charles Baskerville: ...........0e0s..8e eee 54 
A Stupy OF CERTAIN DOUBLE CHROMATES. 
W. G. Haywood..........01..: 3 56 
ORIGIN OF PALEOTROCHIS. 
J¢ S. Diller views tases ook oe oi « Oe ce 59 
THE DEEP WELL AT WILMINGTON N. C. ; 
Ji A. FAOMMER! oes. ww. vie se oe 5 bee ee 67 
New East AMERICAN SPECIES OF CRATAEGUS. 
W. W. ASS assess tek. sc... sees ee 70 
NOTE ON A QUALITATIVE TEST FOR TIN. 
Charles BASKERVILLE....\....... 5564.4 5 80. 
NoTE ON A CASE OF SPONTANEOUS COMBUSTION. 
Charles Baskerville. ..:.......<se.0 2s. 81 
