Index. 



34i 



Potassium Cyanide, Formula for Mak- 

 ing 12 



"Potato Rot" (Farlow) 81 



" Potsdam Sandstone near King of 



Prussia " (Rand) 332 



Pottery, Types of 157 



Pourtalesice 144 



Practical Value of Science. T. H. 



Huxley 3 



" Prehistoric Altars of Whiteside 



County, Illinois." (Holbrook) 112 



" Prehistoric and Early Types of Japan- 

 ese Pottery." (Morse) 112 



Preliminary Account of a Speculative 

 and Practical Search for a Trans- 

 Neptunian Planet. D.P.Todd... 167 

 " Preliminary Determination of the 

 Equation between the British Im- 

 perial Standard Yard and the Metre 



of the Archives." (Rogers) ill 



Preparation of Ashes for the Extraction 



of Iodine from Sea Weeds 307 



"Preparation of Ranvier's Picro-Car- 



ruine." (Gage) 319 



Preservation of Fossil Insects and Plants 



on Mazon Creek. J. W. Pike. .112, 163 



Pressed Yeast 24 



Prionus Californicus 41 



Priority, The, of the late Friederich Mohr 

 in Regard to the Principle of the 

 Conservation of Energy. George 



W. Rachel 203 



Probable Variable Star 317 



Problems in Watson's Co-ordinates. 



Thomas Hill 154 



" Processes forDeterminingthe Organic 



Purity of Potable Waters." (Tidy) 20 



Prodoxus asnescens 137 



Prodoxus cinerius 137 



Prodoxus intermedius 137 



Prodoxus marginatus 137 



Production of Crystals of Chromium 

 Sesquichloride'of a Persistent Green 



Color 260 



Products contained in the Coke of Pe- 

 troleum 3°7 



Products of the Distillation of Colophon- 



ium 247 



" Progress made at the Observatory of 

 Harvard College in the Determina- 

 tion of the Absolute Co-ordinates tf 

 109 Fundamental Stars." (Rogers) in 

 "Progress of Geological Investigation 

 in New Brunswick, 1870-1880." 



(Bailey) 112 



"Progress of Western Education in 



China and Siam." (Gov't Doc.) .. . 152 

 " Prominence of Carbonate of Lime in 



Soil Water." (Stoier) 81 



Pronuba maculata 136, 137 



Propagation of Sound by Light, in 1811 287 

 Proper Motion of the Group C, C 2 Reti- 

 culi; C Toucani; and e Eridani. 



E. J. Stone 9 



" Propositions in Cosmical Physics." 



(Peirce) 79 



Prosdoscismi, Prof., Discoveries of, near 



Este, Italy 6 



Protein, Amount of, in Milk 12 



Protoplasm in Living Tissue 116, 117 



Protoplasm, Nature of 185, 248 



Prussian Blue, Crystalline 307 



Psammechinus 144 



Pseudo-diademalidce 143 



Pseudo-Neuroptera, Organ of Smell in 



the 3 2 ° 



Pseudo-Raphulece 23 



Pt., in vacuo, Thermo-Electric Electro- 

 Motive Power of 150 



Ptomaines in the Animal Body 179 



Ptyaline and Disaslase, Action ot 12 



Pulkowa Observatory 91, 124, 125 



Pulmonifera in Japan 154 



Punica granatum 307 



Pupa Bigsbii 136 



Pupa vetusta 136 



Purification and Refining of Fatty Mat- 

 ters 188 



Pygaster 144 



Pygurus 146 



Pyrina 144 



" Pyrology." (Ross) 47.237, 247 



Pyrology and Microscopical Chemistry. 



W. A. Ross 193 



Pyroxene 96 



Quarantine, Efficacy of 108 



Queckett Microscopical Club 10, 31 



Radiant Energy, On the Measurement 



of 288 



Radiant Matter 58 



Rata torpedo 5 



Railway Brake, An Electric 12 



Rain Containing Organic Debris 71 



Rain Waters, Arnmoniacal Contents of 108 



Rana esculenta 235 



Rana temporaria 235 



Rapid Alcoholic Fermentaiion 224 



Raphidece 23 



" Recc rd of the Progress of Astronomy 



During the Year 1879." (Dreyer). 91 

 "Recurrence, The, of Certain Geologi- 

 cal Phenomena in Geological 



Time," (Ramsey) 172 



Redhouse Observatory 284 



Reduction, The, of Chloride Ores 119 



Reduction, The, of Ethyl Nitrate by 



Alcohol 307 



Reduvius serratus 5 



Refraction, Errors of, in the Eyes of 



Microscopists 8 



Regenerative Gas Furnace 315 



Relation of Vermont Archaeology to 

 that of the Adjacent States. George 



H. Perkins 174 



Remarkable Instance of "Ascending 



Lightning " 247 



Remarkable Meteor, A 191 



Remarkable Peculiaiity of an Anthro- 

 poid Brain. E. C. Spitzka 25 



" Remarks on Pond Life." (Lejdy).... 332 

 Report of the Commissioner of Educa- 

 tion, 1878 [extracts) 291 



Report of the Dredging Cruise of the 

 U. S. Steamer Blake, During the 

 Summer of 1880. Alexander Agas- 



siz 314 



" Report of the United States Geolgi- 



cal Survey of the Terri ories " 54 



"Report on the History of the Discovery 



of Neptune." (Gould) 167 



Reproduction, Modes ot, in the Monads 57 



Repsolds & Son, Instruments of 166 



Reptiles, Anatomy of the Tongue in. . . . 234 

 Researches on Basic Salts and Ata- 



camite 260 



Resin of Palisander Wood 188 



Respirative Power of Marsh and Water 



Plants 12 



" Results of a Magnetic Survey of 



Missouri." (Nipher) 112 



Reticuli, r\^ri 9 



Reversion in Floral Parts. William 



A. Buckhout 310 



Rhabdocidaris 143 148 



Rhinocerontidag, a New Genus of 65 



Rhizocarpea 17 



" Rhizopods in the Mosses of the Sum- 

 mit of Roan Mountain, N. C." 



(Leidy) 332 



Rhizopods, The Fresh Water, of North 



America 54 



Ricinus communis 264 



Richmond Diatomaceous Earth, The... 222 

 Rise of the Zero-Point in Mercurial 



Thermometers 188 



Rissa tridactylus 215 



Rocks, Eruptive, The Structure of 173 



Rodentia, The, as Food 68 



Rolando, The Fissure of, in the Brain 



of the Orang 326 



Rosaniline, Constitution of the Salts of. 188 

 "Rotary Powers of Glucose and Grape 



Sugar." (Wiley) 112 



Royal Astronomical Society. .83, 91, 96, 213 

 Royal Botanical Society 44 



Royal Danish Academy of Sciences .... 166 



Royal Microscopical Society 29, 284 



Royal Observatory, Greenwich 154 



Royal Society, England.. 10, 32, 47, 48, 331 

 Royal Society of New South Wales. ... 71 

 "Rude Argillite Implements" (Abbott). 112 



Ruhmkorff's Bunsen Pile 92 



Ruhmkorff' s Coil 92 



"Rusty Gold" 24 



^accharomyces 36 



Sacculina 63 



Saffron, Adulterations of 307 



Saleni& 147, 148 



Salmo salat 100 



Salts, Amounts of, in Milk 12 



Salutatory 6 



Sandstones of the Catskill Mountains, 

 Relations of the Oneonta and Mont- 

 rose Sandstones to the 290 



San Francisco Microscopical Society. . 24 



Sarracenia variolar is 266 



Saturn 189, 263 



Sauranodon discus 322 



Saurian Footprints in the Ellangowan 



Colliery 89 



Sauropsida 251 



" Savage and Civilized Orthoepy." 



(Ward) 286 



Scalar ia Dalliana 235 



Scarites substriatus 40 



Schaerbele's Comet 214 



Schizaster 146, 147 



Schmidt's Hydraulic Motor, Cost of, 



per hour 84 



Schools of Science in the United States. 292 

 Science, American Association for the 



Advancement of 42 



Science at Breakfast 75 



Science, Co-operation in 30 



Science, Definition of 311 



Science in France and Germany 311 



' ' Science Observer " 305 



Science, Practical Value of 3 



Science, Schools of, in the United States 291 



Science, The Advancement of 109 



Science, The Classification of (I) 311 



Sciences, The Mutual Interaction of the 82 

 Scientific Journalists of Paris, Meeting 



of the 31 



Scientific Journals, The Va'ue of 31 



Scientific Societies in Ameiica 30 



Sclerotium 72 



Scutellida? 144 , 147 



Sea Urchins, Sea Anemones, and Sea 



Cucumbers as food 68 



Sea Water, The Action of, on Subma- 

 rine Cables ^3 



Section Cutter, A New. (Burrill) 162 



Secular Changes in the Earth's Figure. 83 



Seismology 19 



Semnopithecus 303 



Sentisection and Callisection 210 



" Serpentine Belts of Radnor Township, 



Delaware Co." (Rand) 332 



Serrin's Regulator 92 



Setigera 190 



" Sexual Variations in Caslanea Ameri- 

 cana." (Martindale) 332 



Sharks, Do they Swallow their Young?. 236 

 Shawano or Shawnee Indians, Notes on 



the Identity and History of 202 



Shells of Glendower Pit 89 



Sibylla, When Discovered 283 



Siemens' Dynamo-Machine 170, 172 



Sigillaria 136 



Signal Service, The 249 



Sigsbee's Gravitating Trap. Alexan- 

 der Agassiz 314 



Silver, Electrified, Adhesive Power of. . 84 

 Silvering Glass, Faraday's Observations 



on 19 



Silver, Occurrence of 227 



Simla Satyrus 302 



Simple Device, A, for Projecting the Vi- 

 brations of Liquid Films without a 



Lens. H. S. Carhart 137 



Simple Method for Determining the 



Temporary Hardness of Water 331 



