GENERAL INDEX. 



83 



Orange, N. J., Columnar Trap 4 



Orthoclase 43 



•' from Weehawken, N. J.76 



Ostreo. Borealis 59 



Ottrelite 76 



Palace Builders 51 



Pearl from Shrewsbury River Oys- 

 ter 59 



Photographs of Scientific Men 5 



Phyllite 75 



Plants, Fossil, from Providence, 



R. I 76 



Plants, Fossil, from Worcester, 



Mass 75 



Potsdam Sandstone, Figures on. ..42 

 Preglacial Drift of New Jersey and 



Staten Island 26 



Prince's Bay, Staten Island, Glacial 



Drift 30 



Proboscidia 19, 20 



Pyrite... 41 



Pyroxene 42 



Quercus imbrieaiia 31 



Ripidolite from Jerome Avenue, 

 N. Y 78 



Rock-Salt in Western New York, 

 some Recent Discoveries of 55 



Rusophycus 78 



Rutile penetrating a Ceylonese 

 Zircon 59 



Saltville, W.Va., Gypsum and Salt 1 

 Sands, Ocean, River and Desert.... 3 

 Sandstones used for Building in 



New York City 57 



Sargasso Sea of Atlantic Ocean 58 



Sargassum bacciferum 58 



Schorlonite from Maine 25 



Scleria, A Revision of the North 



American Species of 80 



Scolithus 30 



Serpentines of Vicinity of New 



York 79 



Sigidaria 75, 76 



Sound Waves, Theory of 34 



Spirifer arenosus 30 



arrectus 30 



" macropleurus 30 



Staten Island Glacial and Pie- 

 glacial Drift 26 



Strombvs gigas 59 



Strophodonta Beckii 30 



Strophomena rhom boidalis 30 



Survey, Geodetic, United States.... 1 

 Surveys of United States, Trigo- 

 nometric and Topographic 58 



Talc, white, from Gouverneur, 



N. Y 77 



Talc, Serpentine and Tremolitic 



Minerals, Association of 77 



Temperature of Incandescence 43 



Tin Deposits of Black Hills, Da- 

 kota 44 



Torrey Botanical Club, Field Day 5 

 Tourmaline, black, from St. Law- 

 rence Co., N. Y 57 



Track Inspection Car 5 



Trap, Columnar, Orange, N. J 4 



Tribolos 40 



TyranuidiB 34 



Uliiius 31 



United States Geodetic Survey 1 



Viburnum Bridgetonense 31 



Volcanic Phenomena 54 



Yellow Drift 26 



Zircon, Ceylonese, penetrated by 



Rutile 59 



Zizania 31 



