INDEX. 
Language of ancient Egyptians, iv.,60 
Lantana camara, vii., 13 
Lantern Hill, Mystic, Conn., great 
quartz vein of, xv., 183 
microscope, lil., 105 
projections, x., 103 
Lapidary work at Oberstein, iii., 62 
Lapis lazuli, ix., 148 
Laguna Beach, x., 32 
Laramie City, Wyo., calcite crystals, 
TUN ye 45 LO 20. 
flora, x., 3 
group, 1x., 27 
relation of, to the Puerco, xii., 69 
Larrea Mexicana, ii., 92; ix., 181 
Larvee, classification of Lepidopter- 
ous, Xiii., 161 
of Limulus, ii., 106-107 
Lathyrus Arizonicus, viii., 65 
Latitude, determination of, v., 235 
variations of, xii., 26 
Laumontite, ii., 89; vi., 129 
Luray Cavern, ii., 38-41; v., 217 
Laurencite, in meteorite, vi., 161 
Laurentian formation, ii., 7 
iron ores, li., 7, 8, 14-17 
rocks, v., 216 
rocks of 8. E. Penna., vili., 48-51 
of Westchester Co., N. Y., viii., 52 
rocks, notes on, xiv., 21 
series, xiv., 192, 194 
Laurus Holle, xii., 34 
plutonia, 236 
primigenia, 33 
Lava caves, ii., 36 
plain in Idaho, i., 4-5 
Laveesium, v., 200 
Law of deflection in steel rails, xv., 
147 
Laws of fatigue, ete., vi., 114-121 
Lawrence, Mr. George N., xiy., 71- 
72 
Lawton, James Marsland, Jr., elected 
member, xv., 34 
Lead disulphate, xiv., 5 
native, i., 3 
oxide, 1.,; 3 
native, ili., 2 
red oxide, ili., 2 
sulphide, iii., 2, 23 
Lea, Dr. Isaac, memorial of, vi., 65 
Leaf-bearing sandstones at Glen 
Cove, L. I., iii., 30-31 
Leaf forms, origin of, iii., 38-49 
351 
Leaf impressions in ‘‘Amboy ”’ clays, 
v., 136 
Lechea, xii., 188 
Lecture course, programme, 1., 95 
Lecture experiment, v., 214, 215 
Lectures, public course, viii., 59, 82, 
1141305 1515 163 ; 1x. 55; ‘71, 
83, 104, 127, 133, 139, 156, 200 
Lederle, Ernest, elected resident 
member, xi., 25 
Leeches Excreting, System of, xiv., 
79 
Lee, Frederick §., elected resident 
member, xii., 25 
Leersia oryzoides, 1x., 14 
Virginica, ix., 14 
Leguminose, vii., 9 
Leguminosites frigida, xii., 34 
IGSIES ee V7 : 
Lembke, Charles F., elected resident ~ 
member, xiv., 154 
Leucophyllum Texanum, vii., 12 
Lenum Berlandieri, vii., 8 
multicaule, vii., 8 
Lenses, glass, vi., 96-103 
Lentinus Lepideus, v., 111-113 
Lensites vilas, v., 111 
Lepachys Columnaris pulcherima, ix., 
184 
Lepidium intermedium, vii., 7 
Lepidoptera, v., 44 
Lepidosteus, vii., 257 
LePlengoon, Dr., discoveriesin Yu- 
eatan, v., 173, 175, 178 
Leopardite, v., 222 
Leptzna, vii., 2 
Sericea, vii., 4 
Leperditia (?) ventricosa, Steadi, minor, 
primeva, xiv., 137 
Lepiditta sigillata, xiv., 138 
Lepidodendrum, iv., 75, 76 
Lepidolite, v., 80 
Lepidoptera, a list of, ix., 2 
Lepidopterous larvee, Classification 
of, xiv., 47 
Lepidosteus, vil., 257 
breeding habits of, xiv., 45 
Leptzena, vii., 2 
sericea, vil., 4 
Lespedeza, North American species 
Oi, saul. He 
Leucite in New Jersey, xiii., 144 
Leucophyllum Texanum, vii., 12 
Level of N. J. Coast, vi., 39 
