Index. 
339 
"Meteors, Aerolites and Falling Stars.” 
(Phipson) 153 
“ Methods in use at the Observatory at 
Yale for the Verification of Ther- 
mometers, and Testing of Time 
Pieces.” (Waldo) hi 
Method of Determining the Fatty Acids 
Contained in Oils 271 
Metric System, Plea for the, in Micro- 
scopy 52 
Metric System, The 84 
Metritis contractus 38 
Mica Veins, Structure of, in North Caro- 
lina 138 
Micraster 146, 147 
Micrococci 178 
Micrometer Screw, Determination of 
the Value of one Revolution of a. . . 282 
Micrometry and Micrometers 52 
“Microphysiology,” A Lecture on 189 
Microscope, An Improved W. H. 
Bullock 162 
Microscope, “ Dry Mounts " for 74 
Microscope, New Griffith Club Portable 162 
Microscope Stage, An Improved 162 
Microscope, A New Stand for 257 
Microscope, A Warm Stage for 224 
Microscopes, Binocular 305 
Microscopes, Faulty Construction of. . . . 318 
Microscopic Examination, The, ofWrit- 
ings for the Detection' of Forgery. 
C. M. Vorce 160 
“Microscopic Studies in Central Flor- 
ida.” (Merriman) 112 
Microscopical Chemistry 193 
Microscopical Club, Buffalo 10 
Microscopical Collections in Florida. 
C. C. Merriman 263 
Microscopical Definition, Value of Bisul- 
phide of Carbon in 29 
‘ ‘ Microscopical Investigation of Havana 
Yellow Fever.” (Sternberg) 112 
Microscopy, Plea for the Metric System 
in 52 
Microtome, A New. T. J. Burrill 162 
Microtome, An Improved. Willard 
Hailes 187 
Midwifery among the Esquimaux of 
Cumberland Sound 217 
Milk, Abnormal Composition of 12 
Milk, Chemical Constitution of 319 
Milk Test, A New Optical 295 
Mineral Veins, Certain, On the Intimate 
Structure of 289 
Mineral Water, Artificial, Constitution 
of an 139 
Mineral Water, The Epsom, of Mis- 
souri 285 
Mineral Wax: A Resume. M. Benja- 
min 256 
Minerva, When Discovered 283 
“ Minor Planets.” (Skinner) 283 
“ Minute Anatomy of the Human Lar- 
ynx." (Seiler) 112 
Mississippi River, Improvement of the. 232 
“ Mock Suns.” 19 
Modiola polita 235 
Mohr, Friederich, his Life and Works. . 242 
Moira 147 
Molecules, On the Absolute Invisibility 
of 150 
Molecules, Ultimate Determination of 
the Comparative Dimensions of. . . . 139 
“ Mollyhawks,” Mechanism of the Flight 
of 23 
Monads, Mode of Reproduction in 57 
Monistic Realism 312 
Mono-Bromated Diphenyl-methane, Ac- 
tion of, upon Ammonia 307 
“ Monographic Revision of the Euro- 
pean Trichoptera.” (McLachlan). . 80 
Monstrosities Observed in North Ameri- 
can Coleoptera 38 
Montreal, The Island of 242 
Montrose Sandstones, On the Relations 
of the Oneontaand 290 
Moon, Motion of, as effected by the 
Sun’s Attraction 89 
Morrison Observatory 13, 90 
Mortonia !44 
Mortuary Customs, The, Among the 
North American Indians 176 
Mosquitos, Infection from 10 
Motion, Definition of 238 
Motion, The Transmission of, by Elec- 
tricity 11 
Motograph, The 139 
Motors, Relative Cost of, per hour 84 
Mounds, The, of Illinois. William 
McAdams 138 
Mountain Sites for Astronomical Obser- 
vatories. Ormond Stone 152, 158 
Mount Hamilton as a Site for an Astron- 
omical Observatory 152, 158 
Mounting Diatoms, New Method of. . . 284 
Mounting Fresh Blood, Difficulty in . . . 248 
Mounting Materials. Carl Seiler 161 
Mounting Opaque Objects, Method of 305 
“ Mounts,” Dry, for the Microscope. 26, 74 
Mucor circinelloides 36 
I Multiple Spectra. J. Norman Lock- 
yer (I) 27, (II) 104, (III) 218 
Musca domestica 10 
Muscle, Cause of the Contraction of. . . 113 
Mushrooms as Food 68 
Mycoderma Aceti 12 
Mylitta 72 
Myrica cerifeta 264 
“ Myths and Folk-lore of the Iroquois.” 
(Smith) 112 
SM aphthalines, and Their Derivatives, 
On the Constitution of the 323 
Narcomedusce 34, 44, 45 
National Academy of Sciences. .83, 237, 
262, 288, 325 
National Microscopical Congress, The. 225 
National Museum, The 85 
Natural Enemies of the Telegraph 120 
“Natural Orders of Phaenogamous 
Plants and their Special Morpholog- 
ical Classification, etc.” (Gray) 79 
Natural Selection 287 
“ Naturen ” (Trykt hos A. W. Brogger) 320 
Naviculce 23 
Navicula lyra 222 
“ Near Ratio of Oxygen to Nitrogen in 
the Atmosphere.” (Morley) 112 
Nebula collaris 56 
Nebula in Orion, On Photographing ihe 304 
Nebula in the Pleiades, The 9 
Nebular Hypothesis, The 172 
Nebulae, New Planetary 136 
Nemesis , When Discovered 283 
Neptune 167, 263 
Nervous System, Plan of the Cerebro- 
Spinal 134 
Nervous System, Function of the 114 
Neuroptera, Organ of Smell in the.... 320 
Newark City Water, Analysis of the. ... 66 
New Companion to y Fornacis. S. W. 
Burnham 318 
New Electric Pile, (Reynier) 91 
“ New Form of Injecting Apparatus." 
(Spaulding) 176 
New General Method of Analysis, On a. 
Wolcott Gibbs 289 
New Griffith Club Portable Microscope. 
E. H. Griffith 162 
New Periodic Comet, The 258 
New Planetary Nebulas. E. C. Pickering 136 
New Results in the Utilization of Solar 
Heat 247 
New Species of Mollusca and Echino- 
dermata 235 
New Synthesis of Dimethyl-acrylic Acid 272 
New York Academy ofSciences, 275,286, 293 
New York Aquarium 25 
New York Fishery Commission 102 
Nickel, Occurrence of 227 
Nimravidae and Miocene Canidae. Ed- 
ward D. Cope 303 
Nitella 117 
Nitrogen, Estimation of, in Potable 
Waters 21 
Nitrogen, The Mean Ratio of Oxygen to, 
in the Atmosphere 166 
Nitzsckiece ' 23 
Northumberland Inlet 85 
“Note on Philadelphite — A New Min- 
eral.” (Lewis) 332 
“ Note on the Turquoise Localities of 
Los Cerillos,” (Silliman) 112 
Note on the Zodiacal Light. Henry Car- 
vill Lewis 180 
Note upon the Relations of the Oneonta 
and Montrose Sandstones of Van- 
uxem, and their Relations to the 
Sandstones of the Catskill Moun- 
tains. James Hall 290 
“ Notes on Jarosite.” (Koenig) 332 
‘ 'Notes on the Cayuga Lake Star Gazer.” 
(Gage) 319 
“Notes on the Identity and History of 
the Shawano or Shawnee Indians." 
(Royce) 202 
Notes on the Japanese Pulmonifera. 
Edward S. Morse 154 
Notes on the Structure, Development, 
and Position, of a (Supposed) Un- 
described Flagellate Infusorium. J. 
H. Fisher 161 
November Leonids, 1880, The. Edwin 
F. Sawyer 294 
NucleolidcB 145 
“Numerical Aperture” of Microscopes 29 
Nutritive Value of Fish, On the. W. O. 
Atwater 233 
Nutritive Value of Grass in Various 
Stages of Growth 12 
Nuwa, When Discovered 283 
Qberon 165 
Observation Made on a Group of Rays 
in the Solar Spectrum 224 
Observations on Brachiopods. Edward 
S. Morse 151 
“ Observations on Japanese Brachio- 
poda.” (Morse) 112 
“ Observations on Mount Etna.” (Lang- 
ley) 1 152 
“Observations of Some Recent Hail- 
storms in North Carolina.” (Blake) . 112 
“ Observations on the Temperature and 
Chemical Character of Mystic Lake, 
Mass.” (Nichols) 112 
Observatories in the United States 90 
Observatories of Hudson, Ohio 1 
Observatory of Georgetown, D. C 1 
Observatory, The Establishment of an, 
for Astronomical Discovery 189 
Observatory of the Earl of Rosse 19 
Observatory of the Ohio State Univer- 
sity 90 
Observatory of the Philadelphia High 
School 1 
Observatory of the West Point Military 
Academy 1 
Occurrence of Ozone on Evaporation of 
Different Liquids 197 
Occurrence of Tin at Winslow, Me. C. 
H. Hitchcock 112, 257 
Odontaster hispidus 235 
Oellzen 17681 136 
Oeltzen 17681, Spectrum of 178 
Off as ter 144 
Ohio State University, The Observatory 
of 90 
Ohm's Laws 129 
Oils, Friction of Lubricating 155 
Olive Oil, American 24 
Olivine in Peckhamite 92 
" On a Form of Vacuum Tube for Spec- 
troscopic Work ” (Wright) hi 
" On a Jurassic Sand ” (Lewis) 332 
“ On a New Fucoidal Plant from the 
Trias ” (Lewis) 332 
“ On an Exfoliated Talc.” (Lewis.)... 332 
“ On a Peculiar Stratification in Gneiss ” 
(Rand) 332 
“ On a Probable Pseudo-morphism of 
Gummite and Uranotile after Uran- 
inite ’’ (Foote) 332 
“ On a Solution of Ferric Gallate and 
Ferric Oxalate as a Reagent for 
Quantitative Analysis of Ammonia” 
(Webster) 112 
“ On Comets and Ultra-Neptunian 
Planets” (Forbes) 169 
