208 
INDEX. 
Paga 
Gregory, H. E. , collection of fossils by . . 14 
fossils collected by 45 
paper on geology of Aroostook vol- 
canic area by 93-188 
H. 
Hall, James, cited on Beyrichia pustu- 
losa .- 85 
cited on features of Chonetes nova 
scotica 85 
fossils described by 41 
Hall and Clarke, cited on characters of 
the Rhynchonellidae. 57 
cited on omission of Camarotoechia 
from Lower Helderberg faunas. 59 
cited on Rhynchonella 58 
Halycites 36 
Hawes, G. W., analyses by 176-177 
Haystack Mountain, diagram of 109 
features of... 107-108 
localities examined at and near 200, 201 
plate showing spherulitic rhyolite 
and vesicular lava from 107 
rhyolitesat 152-161 
vesicular lava at 159-161 
view of 107 
volcanic tuff near 121 
Haystack rhyolite, occurrence and 
character of 107-109 
Hederella 43 
Hedgehog Mountain, localities exam- 
ined at 199 
trachyte at 110,161-162 
Heliolites 35,36,37 
Heliopora 41 
Hemitrypa 43 
Horseshoe Pond, fossil from 29 
Hillebrand, W. F. , analyses by 124, 
138-139, 155, 166, 171, 176, 178-179, 183, 188 
Hindia 43 
Hitchcock, C. H., cited on age of Aroos- 
took limestones 141 
cited on age of fossils from Aroos- 
took County, Maine 44 
cited on age of Mapleton sandstones. 137 
cited on granite area at Drews 
Lake 106 
cited on localities of Oriskany 
(Moose River) sandstone 88 
cited on Paleozoic fossils of Maine. 27, 
28,29,30,31 
cited on rocks of Mars Hill 134-135 
fossils identified by 30 
geological map and description pre- 
pared by 103-104 
quoted on features and age of lime- 
stone at Ashland 52 
surveys by 103-104 
Hippariony x 42 
Hobart Hill, andesites at 113 
hornblende-andesite at 1 72-173 
localities examined at 196 
plate showing cleaved andesite 
from 101 
Hodge, J. T., cited on occurrence of 
Lower Helderberg rocks.. 31 
cited on rocks at Mars Hill 134 
Page. 
Hodge, J. T., surveys by 102 
Holmes, Ezekiel, surveys by 103 
Holopea.. 34,79,86 
Holopella ( Turritella) obsoleta 83 
Homalonotus 29,36,41,42,79 
Homalonotus Knightii 87 
Honeyman, D., cited on age of rocks of 
Arasaig section 40 
Hornblende-andesite, occurrence and 
character of 172-173 
Houlton Station, localities examined 
near 193 
Hudson River series, age of 23 
Hunter, M., analyses by 183-184 
Hyatella 53 
Hyolithes 36 
Hypothyris 57,60 
I. 
Ichthyocrinus 36 
Igneous rocks, occurrence and charac- 
ter of 105-117 
petrography of 146-186 
Ilkenus. 36 
Illinois, fossils from 43-44 
Iron slate, manganiferous, plate show- 
ing 144 
Ivys Corner, New Brunswick, localities 
examined near 203 
J. 
Jackman farm, Jackman, fossils from. . 90 
Jackson, C. T., cited on hematite beds 
on the Aroostook River 145 
surveys by 102-103 
Johnsons Brook, New Sweden, sand- 
stones on 137-138 
Jonesboro, 111. , fossils from 43-44 
K. 
Kayser, E., cited on equivalence of 
Lower Helderberg and Hercyn- 
ian faunas 81 
Kemp, J. F., analysis by 166 
Kersantite, occurrence and character 
of 151 
Kuch, R., analyses by 171-172 
L. 
L'Anse a la Veille limestone, age of 23 
Lake Telos, fossils from 30,33 
Lapilli of volcanic tuffs, petrographic 
features of 122-123 
Lava, andesitic, plate showing „ . . 112 
vesicular, plates showing 107,160 
Leiopteria 79 
Leiorhy nchus 39, 57 
Leperditia 33,36,41,42 
Lepidodendron _ 31 
Lepidostrobus 31 
Leptaena . . 29, 36, 37, 42, 43, 47, 48, 49, 50, 53, 54, 55, 86 
Leptaena lata 83,84,85 
Leptaena transversalis 49 
Leptagonia 38 
Leptoccelia 30,32,34,37,40,43,89 
Leptodomus.... 30,33,40 
Leptophlamm 31 
