INDEX. 
Sphene, v., 77-264; viii., 21-50 
Sphenophyllum, iii., 46 
dimorphous foliage, iii., 46 
Spherostilbite, iii., 18 
Sphingina, iv., 59 
Spiders of Colorado (by title), xiv., 
100 
Spinel, iii., 21 
from Ceylon, v., 225 
Spiraxis, ii., 154 
major, D. Sp., lli., 33 
Randatli, n. sp., ili., 34 
Spireza cespitosa, viii., 81 
discolor, vili., 80 
millefolia, viii., 80 
Spirifer avenosus, iv., 30 
arrectus, iv., 30 
macropleurus, iv., 30 
Spirifera macropleura, xiii., 125 
Spirophyton, iii., 33 
Spirulea rotula, ti., 12 
Spitzbergen, climate of, iii., 85-87 
Spodumene, i., 2, 102; il., 25; viii., 
161 
from Maine, vi., 40 
from N. C., vil., 2, 3 
Spokane mine, x., 63 
Spongida of Protolenus Fauna, xiv., 
2 
Sporadinus ricordi, x., 52 
Sporobolus, vili., 79 
Spots on the sun, v., 239-242 
Springs, hot, at Pagosa, Col., i., 7 
soda, near Fort Worth, Texas, i., 
15 
salt, in Texas, i., 16 
warm, x., 64 
Spy, human remains at, viii., 132- 
135 
Squid, i., 175 
St. Acheul, palzeolithic arrow heads, 
ili., 81, (82 
Staffa, caves of, ii., 3-6, 37 
Stalactites, ii., 39, 40 
in Mammoth Cave., i., 60 
Stalactitic aragonite, viii., 45 
melanterite, vili., 22 
Standards of time, i., 88 
Standard time, v., 236 
time, progress of, xi., 45 
sizes for drawers and trays, Xxiii., 
140; xiv., 65, 66, 67 
Standing Committees, x., 103 
Staphylinide, viii., 117; ix., 162 
357 
Starch, estimation by Von Asboth’s 
method, x., 24 
Star, garnets, v., 225, 226 
magnitudes, x., 117 
places, calculation of, x., 86 
plates, Rutherfurd, x., 102 
photographs, i., 146 
Starr, Prof. M. Allen, elected resi- 
dent member, xiv., 65 
Stars, v., 257-260 
about Beta Cygni, measures of, 
xi., 120 
catalogues of, v., 257, 258 
double, v., 260 
parallax of, v., 259, 260 
photographs of, v., 258 
photometry of, v., 258, 259 
‘spectra of, v., 259 
variable, v., 259 
mean declination of 56, observed 
for variation of latitude at Naples 
and New York, xiv., 87 
State forests of Germany, viii., 32 
Staten Island, N. Y., v., 228-230; 
Vie, 80; O0 
asbestos, v., 229 
azoic rock, v., 228 
Cretaceous plants, v., 28, 29 
minerals, lii., 49, 50; v., 228-230 
serpentine, v., 228 
steatite, v., 228 
buildings of, ii., 67-71 
earved head found in, iii., 81 
leaf-bearing sanastones, ili., 30, 31 
geology of, i., 56-58; vi., 12-18; 
vili., 177-181 
Natural Science Association, i., 67 
Cretaceous on, viii., 31, 177-180 
limonites of, viii., 180, 181 
Quaternary of, viii., 180, 181 
glacial and preglacial drift, iv., 26 
stone adze from, vill., 17 
Staurolite, viii., 3, 49 
Stauroneis, xii., 220; xiii., 161 
Steam, behavior in steam engine 
cylinder, i., 111-114 
pipes, heating surface, i., 67—70 
engines, absolute limit to econom- 
ical expansion in, ii., 1 
engine, development of, v., 137- 
143 
Newcomen’s, v., 137, 138 
Savery’s, v., 137 
Watts, v., 138 
