346 
Philadelphia, geologists in, xi., 45 
rocks of, viil., 47-53 
Philadelphite, vili., 50 
Philibertia wndulata, ix., 184 
viridiflora, vii., 11 
eyanchoides, vii., 11 
Philippium, v., 200 
Phillipsia insignis, vii., 249 
Sampsoni, vii., 247, 249 
trinucleata, vii., 249 
tuberculata, vii., 247, 249 
Philippian Pulmonate, Varietal tree 
Ol, XV Lod 
Cochlostyla ovoidea, xv., 137 
types of bands, xv., 139 
Correlation between size and color, 
xv., 139 
Species from Varieties, xv., 140 
Transmission of acquired charac- 
ters, problem of, xv., 141 
Evolution in fossil Cephalopods, 
xv., 141 
Phlogophite, iii., 49 
Phlox Drummondii, ix., 185 
Roemeriana, ix., 185 
speciosa, var. Woodhousei, viii., 80 
Phococyan, vi., 49 
Pheenicopterus ruber, x., 52 
Pheenix, Lloyd, elected resident 
member, xiv., 154 
Pholas, vi., 31 
Phosphate beds of Florida, ix., 85 
Nodules from the Cambrian, xii., 
108 
Phosphorescent diamonds, xiv., 260 
wood, x., 37 
infusorian, v., 15, 16 
Phosphorescence of fluorite, iii., 77, 
100 
of marine animals, v., 14, 16 
Phosphoric acid, exhaustion in soil, 
lii., 16 
Phosphorus, v., 186, 187 ~ 
in meteorite, vi., 92 
Photographic measures, Rutherfurd, 
xi., 41 
Photography, v., 248 
applied to astronomy, i., 143, 146 
recent advances in, i., 176 
of Manometric flames, xiii., 205 
Photographs of caves, ii., 41 
of scientific men, iv., 5 
of stars, v., 257 
of sun, v., 241, 246 
INDEX. 
Photo-micrographs, xiv., 71 
processes and results, lii., 105 
of wood sections, iii., 107 
Photosphere of sun, v., 242 
Photometric differences, method for 
determining, v., 155 
Photometry, solar, viii., 156 
stellar, x., 117 
Photo-micrography, suggestions in, 
Bch 7S 
Phyllanthus polygonoides, vii., 13 
Phyllite, iv., 75 
Phyllites poinsettiodes, xii., 37 
Phyllocladus, iii., 47 
Physa, v., 218 t 
Physalis Fendleri, vii., 12 
Physeter macrocephalus, xii., 50 
Physical conditions in formation of 
coal, ii., 50 
theories, moral bearing, i., 96-99 
Physics, relation with chemistry, v., 
189, 190 
Physiology, application of chemistry 
to, v., 198 
scope of modern, xili., 98 
Physiological chemistry, v., 198 
Physonemus Altonensis, ix., 133 
Phytolacca, iii., 88 
Phytolaccacez, vii., 13 
Pickling of ancient silver castings, 
iii., 15 
Piercing of granite by use of corun- 
dum, iii., 105 
Pierson. Israel C., elected Fellow, 
xv., 134 
Piffard, Henry G., elected resident 
member, xv., 147 
Piffard, salt well, ix., 41 
Pinaropappus roseus, vii., 11 
Pinus vig oO exilegok 
aristata, Vili., 77 
edulis, ii., 91; viii., 76 
ponderosa,i., 8; viil., 76, 78 
succinifer, vili., 157 
bahamensis, x., 6 
flexilis, i., 5 
inops, V., 222 
mitis, v., 111 
palustris, v., 111, 112 
Piperidine, v., 195, 197 
Pitch lake of Trinidad, viii., 26 
Pittsburgh, Penn., acidity of atmos- 
phere, ili., 65, 66 
Pittsford, Vt., marble, viii., 101, 102 
