CONTENTS 



XX. — Ozone and ike Atmosphere. By Albert B. Leeds 193 



XXI. —The Physical History of the Trias of New Jersey arid the Con-' k" 



necticut Valley. By Israel 0. Btjssell 220 



XXII. — Description of a new species of Bird of the Genus Ch&tura, 



By George N. Lawrence ...... ! 255 



'>>„■, 



