Vill CONTENTS. 
M. A. VEEDER. 
Results of Observations of the Auroraand Related Conditions (abstract). 221 
T. G. WHITE. 
Brief Ontline of the Igneous Rocks along the Sea Coast of Maine and 
Massachusetts -(mot printed!) icsccssssasmnscscessssscvenmeerceyenssarhentircces 219 
PROF. R. P. WHITFIELD. 
On a New Seaweed from the Trenton Rocks of Wisconsin.................. 63 
On Embryonic Baculites from the Black Hills. (Not printed by the 
‘Academy, - See Teference intext.) 5.0... -<<csssessmentee een aces ca ousenes 63 
: PROF. E. B. WILSON. 
Researches in the Embryology of Echinoderms (not printed)............... 45 
The Newer Problems of Embryology (not printed ).............sceceeeneeeees 76 
The Fertilization and Early Development of the Ovum (not printed)... 185 
PROF. R. 8S. WOODWARD. 
An Historical Sketch of the Development of the Science of Mechanics 
(Not printed by the Academy. See reference in text).............0000 64 
The Condition of the Interior of the Earth (abstract)................0.2eeee 72 
DR. J. L. WORTMAN. 
On the so-called Devil’s Corkscrew, Daimonhelix of Nebraska (not 
PEIUMLEG)/.< Beeecticsesssaeeels case castes sa siete anemones tees celtenel ts enc saat etenneias 79 
White River Miocene Deposits (not printed )................-scsscccseeseesees 187 
LIST OF PLATES. 
Plate I. Foraminifera of the Protolenus Fauna. 
Plate II. Spongida and Brachiopoda of the Protolenus Fauna. 
Plate III. Botsfordia pulchra. 
Plate IV. Brachiopoda of the Protolenus Fauna. 
Plate V. 6c “ 6c c 
Plate VI. Mollusca ee 66 7: 
Plate’VII. Ostracoda ‘‘ “ cs 
Plate VIII. Ostracoda (and Phyllopoda?) of the Protolenus Fauna. 
Plate TX. ‘Trilobita of the Protolenus Fauna. 
Plate EX. ce cs ce ce 
Plate XI. a3 a3 ‘6 6c 
Plate*XII. 1. Spherulitie Structure in Felsite-porphyry. 2. Micro- 
drawing of Felsite-porphyry. 
Plate XIII. 1. Perlitic Structure. 2. Skeleton Crystals of Magnetite. 
Plate XIV. 1. Micro-drawing of coarse Diorite-porphyrite. 2. Micro- 
drawing of fine Diorite-porphyrite. 
