Index. 



343 



" Theory of Primitive Democracy in the 



Alps " (Ross) 112 



" The Peduncular Tracts of the Anthro- 

 poid Apes " (Spitzka) 25 



" The Placenta and Generative Appara- 

 tus of the Elephant " (Chapman). . . 322 

 "The Probable Error of a Single Ob- 

 servation at Sea, Deduced from the 

 Observations of W. H. Bacon, 

 Cunard Steamer, ScvtAia" (Rogers) 112 

 " The Recurrence of Certain Geological 

 Phenomena in Geological Time" 



( Ramsey) 172 



" The Reign of Law " (Argyll) 229 



"The Relation of Medium Power Ob- 

 jectives toMicro-Biology"(Lapham) 160 

 " The Relationship of the Carbonifer- 

 ous Euphoberia to Living and Ex- 

 tinct Myriapods " (Scudder) 288 



Thermo-Electric Apparatus. R. H. Ri- 



dout 8 



Thermo-Electric Electro-Motive Powtr, 

 On the, of Fe. and Pt. in vacuo. C. 



A. Young 150 



Thermometers, Accuracy in 202 



Thermometers, Causes of the Variation 



of the Fixed Points of 224 



" The Scientific English Reader "(Wer- 



shoven) 296 



" The Silver Country of the Great South 



West " (Anderson) 303 



" The So-called Emery-Ore from Chel- 

 sea, Bethel Tp., Del. Co., Pa." 



(Genth) 332 



" The Soil Supply of Nitrogen for 



Plants " (Atwater) 112 



" The Solar Parallax for Meridian Ob- 

 servation of Mars in 1877" (East- 

 man ) 112 



"The Student" (Haverford College)... 296 

 " The Sulcus of Rolando as an Indica- 

 tion of Intelligence " (Clevenger) . . 329 

 "The Surface Geology of Philadelphia 



and Vicinity,'' (Lewis) 332 



"The Systematic Errors of the Green- 

 wich Right Ascensions of Southern 

 Stars Observed between 1816 and 



1831," (Rogers) Ill 



" The Tertiary Age of the Iron Ores of 

 the Lower Silurian Limestone Val- 

 leys," (Lewis) 112 



" The Theory of Sound in its Relation 



to Music," (Blaserna) 271 



"The Trenton Gravel and its Relation 



to the Antiquity of Man," (Lewis). . 332 

 " The Valuation ot Indigo," (Norton).. 112 

 " The Young Chemist," (Appleton). .. . 212 



Thin Glass Covers 10 



Thyra, When Discovered 283 



Tiaropsis indicans 64 



" Tidal Theory of the Forms of 



Comets," (Lewis) 112 



Tide Predicting Machine 166 



Tillandsia usneoides 264 



Time Service of the Harvard Observa- 

 tory 80 



Time, The Distribution of 277 



Time, Uniform 13 



Tin, Electrified, Adhesive Power of . . . . 84 



" Tin in North Carolina," (Lewis) 332 



Tinnitus Aurium, The Cause of 114 



Tin, Occurrence of 227 



Tin, Occurrence of, at Winslow, Me. . . 257 



Titania 165 



Titanium Tetra-Chloride, Compound 

 of, and Phosphorous Proto-Chlor- 



ide 307 



Tobacco Smoke, Products Extracted 



from 72 



Tongue, Anatomy of the, in Snakes and 



Other Reptiles, and in Birds 234 



"Tongue in Snakes and Birds," (Mi- 



not) 112 



Tooth, Human, Structure of the 160 



Topaz 96 



Torpedo raia 5 



Torrey Botanical Club, The 306 



Toitcani, C 9 



Tourmaline % 96 



Toxaster 146 



Toxaslet idee 144 



Toxopneustes 145 



Tracneata 97 



Tracholina 34 



Trachomedusce 34, 44, 45 



" Traite du Microscope," (Van Heurck) 23 

 Transformation of Planorbis. Alpheus 



Hyatt (I) 138, (II) 196 



Trans-Neptunian Planet, Speculation 



and Practical Search for a 167 



" Treatise on Comparative Embryol- 

 ogy," (Balfour.) 96 



" Trials of Fertilizers," (Storer.) 81 



Trichinae in Fish 10 



Tricocephalus dispar 303 



Trifolium pratense 310 



Triglia Adriatica 134 



Trigonocidaris 145 



Ttipleckinidcs 143 



Tuckahoe, Nature and Distribution of. 



Mrs. M. J. Young 6 > 



Tuckahoe, or Indian Bread. ..12, 60, 72, 262 

 Tuckahoe, or Indian Bread. J. Howard 



Gore 262 



Tunicata 17 



Tungstic Anhydride 307 



Tungsto-Boric Acid 247 



TurboniUa Rathbuni 235 



' ' Turkey Red " 62 



" Turnbull's Blue " 307 



Turquoise, The, of New Mexico. B. Sil- 



liman 289 



Tuttle's Comet, Period of 258 



Twig-Blight of the Apple Tree 162 



Two Kinds, The, of Vivisection : Senti- 

 section and Callisection. Burt G. 



Wilder 210 



Two New Methods of Fighting Injuri- 

 ous Insects. A.J.Cook 212 



Tycho Brahe's New Star 274 



Types of Pottery. Edward S.Morse.. 157 



(Jlmic Materials Produced by the Action 



of Acids upon Sugar 319 



Ultra-Violet Rays 307 



Umbricl 165 



Uniform Time. Ormond Stone 13 



United States Coast Survey 52 



United States Commissioner of Educa 



tion, Report of, 1878 285 



United States Fish Commission, 79, 191, 



213, 233, 235, 241 



United States Marine Hospital 52 



United States National Museum 100 



United States Naval Observatory. . . .1, 

 90, 152, 158, 250, 277, 279, 305, 318, 

 330. 



United States Observatories 90 



United States Signal Service 166 



Unity of Nature, The. Duke of Argyll. 



..(I) 181, (II) 228, (III) 267, 280 

 Universities and Colleges in the United 



States 291 



Universities, The German 179 



University of Texas 274 



" Uranian and Neptunian Systems In- 

 vestigated with the 26-in. Equatorial 

 of the U. S. Nav. Obs., Washing- 

 ton." (Newcomb) 165 



"Urania." (New Astr. Jour.) 305 



Uranus 165, 167, 263 



Urea, Determination of, by Sodium 



Hypobromite 188 



Uria zrylle 215, 322 



Uric Acid, Formula for 79 



Ursce Majoris, jj, Spectrum of 259 



Useful and Noxious Plants. T. J. Bur- 

 rill 223 



Use of Bromine in the Analysis of Sul- 

 phites 296 



Use, The, of Wax Cells in Connection 

 with White Zinc Cement for Fluid 

 Mounts. William H. Walmsley... 161 



Utilization of Solar Heat 69 



Utricularia 265 



^actinium tenellum 264 



Vaccinium uliginosum 87 



Value of Bisulphide of Carbon in Micro- 

 scopical Definition 29 



"Vanadium in Philadelphia Rocks." 



(Lewis) 332 



Vaucheria 117 



Vapors, Experiment with 31 



Variable Star, A Probable 317 



"Variations of Animals and Plants 



under Domestication." (Darwin) 287 

 Variations of the Co-efficient of Expan- 

 sion of Glass : 247 



Variations of the Fixed Points of Mercu- 

 rial Thermometers, &c 272 



Vegetable Wax, A Peculiar 169 



Velocity, The, of Light 262 



Venus 167, 263 



Venus' Fly Trap 21 



Venus, Spectrum of 259 



Verbascum 318 



Vermes, Cerebral Ganglia of 131 



Vibrations of Liquid Films, A Simple 

 Device for Projecting the, without a 



Lens 137 



Vibrations of Plates Vibrated at the 



Centre 157, 198 



Vibrion. (Butyric) 162, 163 



I Vinegar, Formation of, by Bacteria 12 



Vinegar, Transformation of Alcoholic 



Liquids into 84 



Virginis, a, Spectrum of 259 



Visual Telegraphy 14 



Vivisection, Two Kinds of 210 



"Vacation Colonies for Sicklv School 



Children." (Gov't Doc.).' 152 



Volcanic Phenomena, Earthquakes and, 19 

 Vulcan 270 



Warner Observatory 330 



Washburn Observatory 283 



Water Analysis 13, 20, 66 



" Water Analysis : A Practical Treatise 



on the Examination of Potable 



Water " (Wanklyn and Chapman). 20 



" Water Analysis for Sanitary Purposes, 



with hints for the Interpretation of 



Results " (Frankland) 20 



Water Jets as a Source of Electricity . . 84 

 Water, Method of Determining the 



Temporary Hardness of 331 



Water, Perforation of Zinc Cisterns and 



Corrosion of Lead Pipes by 296 



Water Plants, Respirative Powers of. . . 12 



Water Ousel 267 



Water Supply of Cities. H. C. H. Her- 



old 13 



Water, Spectrum of 107 



Water, Usual Amount ot, in Milk 12 



Watson, Prof. James C, Death of 270 



Watson, Prof. J. C. Minor Planets Dis- 

 covered by 283, 305 



Wax, Mineral, A Resume. 256 



Weather Bureau 249 



Weight, Specific Gravity, Rates of Ab- 

 sorption, and Capability of Stand- 

 ing Heat, of Various Building 



Stones. Hiram A. Cutting 254 



Western Union Telegraph Company, 

 The Transmission of Time Signals 



b y 13 



Weston Dynamo-Machine 170 



" Wheel Bug," The 5 



White Spot, The, on Jupiter. E. E. 



Barnard 294 



Wilde Dynamo-Machine 172 



Winchester Observatory 202 



Winnecke's Comet, The Period of 258 



Withdrawal of Papers by Alexander 



Agassiz 326 



Wollastonite 194 



Woodpecker, The Lesser Spotted 24 



Wooly Elephants 202 



Writings, Microscopic Examination of, 



for the Detection of Forgery 160 



Wyandotte Government J.W.Powell.. 20^ 



Wyandottes, The. J.W.Powell 137 



\enoneura 292, 293 



