302 



GENERAL INDEX. 



PAGE 



" Potomac " clays 186 



Potsrlain strata! 21 G, 317 



Piaseodymiuiu 184, 200 



Preliistoric man in America. . 120 



Prelmite, new locality 80 



Preliminary' note on meteorite 231 

 Preservation of building ma- 

 terials, etc. . ,..56-71 



of building stone 13 



of or^ianic tissue 117 



of wood 116-120 



Primary matter. . , 184 



Progress in asti-onomy 234 



Prominences, solnr 244-245 



Protective influence of miti- 

 gated virus 204-213 



Pthalic acid 195 



Pvridine 1!)5 



Pyrites 121, 192, 230 



Pyroxene, in iron ore 221 



Pyrrol 195 



Quartzite 222 



at Balcony Falls 219-220 



in E. Tenn 220 



in Page V'alley 217 



in San Juan Mts 122, 125 



Quartz, after calcite. 133 



coated with chlorite 214 



cutting of. etc 267-277 



from Arizona 133 



from Arkansas 265 



green 229-230 



in cavities of rliyolite 214 



in Luraj'^ caverns 217 



milky, laminated 77 



pseuilomorphs of 266 



Quartz-syenites 220 



Quinine 195 



" Rackarock " 14 



Radiant matter 178 



RmIIs, of railroads ...145-148,152 



Railways, a.ppliunces of 149 



extent of .. 149, 150 



inception and progress of. 



137-152 



income of 151 



rates of 150 



signals of 149 



Rare gems, etc 131-133 



" Raritan " claj^s of N. J 136 



Recent progress in chemistry, 



179-203 



PAGE 



Reports of Committees: 



Publication Com 1, 164 



Memorial Corns 278 



Reports of Officers: 



Corres. Secretary 162 



Record. Secretary .29, 162, 278 



Librarian 1, 20, 164, 282 



Treasurer 163 



Reptiii;ui foot-prints in N. J. 



Trias 72 



" Reversion spectra " ... 182 



Review of Diodontidte. etc 89 



of Dynamic Electricity, 89-110 



of fossil fish^^s, etc...." 233 



of Petromyzontidaa .... 89 



Rock-crystal, etc 267-277 



sources of 269, 376-277 



Rhigolene 194 



Rhodonite from Franklin, N. ■ 



J 25 



Rhj'olite. holding topaz ... 213 

 Ring structure of carbon comp. 165 

 Rise and progress of inverte- 

 brate zoology 29-55 



Rogerium 200 



Rotation of eaith 236 



Rubies fnmi North Clarolina. . 72 



from Franklin, N. C 133 



Rutile 75. 76, 264 



in garnet 225-226, 327 



Salicine 197 



Saltpetre 314, 215 



Salts of copper 215- 



Samarium".... 181, 200 



Sandstones, at Balcony Falls. 



219 20 



decay in 13. 59, 61-62 



in San Juan Mts 122, 126 



Sanitary chemistry 198 



influence of vegetation in 



cities 264 



San Juan Exploring Expedi- 

 tion 130 



San Juan Mts. of Col 121-130 



Satellites. 



of Mercury 247 



of Venus.! 249 



of Mars 249, 253 



of Jupiter 252, 253 



of Uranus 253. 253 



of Saturn 353, 353 



of Neptune 353 



Saturn 353 



Scandium 181, 183, 300 



