Index. 
343 
“ Theory of Primitive Democracy in the 
Alps "(Ross) 1 12 
" 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, Scythia' (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 
“Tne 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 Powt-r, 
On the, of Fe. and Pt. in vacuo. C. 
A. Young 130 
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) in 
“ 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 ol Indigo,” (Norton).. 112 
“ The Young Chemist,” (Appleton).... 212 
Thin Glass Covers 10 
Tkyra, When Discovered 283 
Tiaropsis in dicans 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 163 
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) 1 12 
Tooth, Human, Structure of the 160 
Topaz 96 
Torpedo raia 3 
Torrey Botanical Club, The 306 
Toucani , £ 9 
Tourmaline 96 
Toxaster 146 
Toxastetida 144 
Toxopneustes 14S 
Tracheata 97 
Tracholince 34 
Trachomedusce 34, 44, 43 
“ 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- 
" Trials of Fertilizers," (Storer.) 81 
Trichinae in Fish 10 
Tricocephalus dispar 303 
Tri folium pratetise 310 
Triglia Adriatica 134 
Trigonocidaris 143 
Ttiplechinidce 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 
Turbonilla 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. . 137 
Value ot 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 
“Variarions 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 239 
Verbascum 318 
Vermes, Cerebral Ganglia of 13 4 
Vibrations of Liquid Films, A Simple 
Device lor Projecting the, without a 
Lens 137 
Vibrations of Plates Vibrated at the 
Centre 157, 198 
Vibrion. (Butyric) 162, 163 
Vinegar, Formation of, by Bacteria. ... 12 
Vinegar, Transformation of Alcoholic 
Liquids into 84 
Virginis, a. Spectrum of 239 
Visual Telegraphy 14 
Vivisection, Two Kinds of 210 
“Vacation Colonies for Sickly School 
Children.” (Gov't Doc.) 152 
Volcanic Phenomena, Earthquakes and, 19 
Vulcan 270 
U lmic M aterials Produced by the Action 
of Acids upon Sugar 319 
Ultra-Violet Rays 307 
Umbriel 165 
Uniform Time. Ormond Stone 13 
United States Coast Survey 32 
United States Commissioner of Educa 
tion, Report of, 1878 283 
United States Fish Commission, 79, 191, 
213, 233, 235, 241 
United States Marine Hospital 32 
United States National Museum 100 
United States Naval Observatory. . . . 1, 
90, 132, 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 163, 167, 263 
Urea, Determination of, by Sodium 
Hypobromite 188 
Uria trrylle 215, 322 
Uric Acid, Formula for 79 
Ursa Majoris, r/, Spectrum of 259 
Useful andNoxious 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 
V accinium lenellum 264 
Vaccinium uliginosum 87 
W a mer 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 of, 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, ot Various Building 
Stones. Hiram A. Cutting 234 
Western Union Telegraph Company, 
The Transmission of Time Signals 
by 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 238 
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. . 20c 
Wyandottes, The. J. W. Powell 137 
y^enoneura 292, 293 
