

CONTENTS. 



XXVII. — On Spodumene and its Alterations (concluded). By 



Alexis A. Julien, (with plate XIII) . 329 



XXVIII. — On certain North American Species of Zonites, etc. By 



W. G. Binney (with plates XIV and XV), f 355 



XXIX. — Lines of Discovery in the History of Ozone, with an Index 

 of its Literature, and an Appendix upon the Literature 

 of Peroxide of Hydrogen. By Albert R Leeds 363 



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