INDEX 



The superior figures tell the exact place on the page in ninths; e. g. 190^ 

 means page 190, beginning in the third ninth of the page, i. e. about one 

 third of the way down. 



Abbot, Francis, hermit of Niagara, 



Acroculia angulata, 21 il 



niagarensis, 21 1^ 

 Aechmina, 220'. 



spinosa, 220^ 

 Age of Niagara, 82^-85". 

 Alasmidonta, 250^ -5 1\ 



calceola, 250'. 



truncata, 250^-5i\ 

 Algonquin lake, S9'> 62^; map, 63. 



river, 62'. 

 American falls, rate of recession, 83^; 



illus. facing p. 38. 

 Amnicola, 241^. 



letsoni, 241'. 



limosa, 241'. 

 Anastrophia, i89'-9ol 



brevirostris, 190^. 



interplicata, loo^ i9o\ 

 Annelida, i6i\ 

 Anoplotheca, 205^-61 



hemispherica, 96\ 205^ 



plicatula, 96', 96", 205'-6'. 

 Anthozoa, 135^-48^ 

 Argyle, duke of, quoted, 12". 

 Arthrophycus, 132'. 



harlani, 93"^, 122^ 132^; illus. fac- 

 ing p. 132. 

 Ashburner, C. A., cited, 253". 

 Astroccrir.m constrictum, 142". 



parasiticum, I4I^ 



pyriforme, 141^-42^ 



venustum, i40*-4i\ 

 Atrypa, i95'-9*7'. 



aprinis, 200'. 



bidcns, I94^ 



bidentata, I95\ 



brevirostris, I90^ 



camura, 20I^ 



Atrypa, congesta, 204®-5^ 



corallifera, 179^ 



cuneata, 192^. 



cylindrica, 203^-4". 



hemispherica, 205^ 



intermedia, 203^ 



interplicata, i9o\ 



neglecta, I93^ 



nitida, 202". 



var. oblata, 202°. 



nodostriata, lOO", i02\ 102", 103^ 

 196^ 



oblata, 203\ 



obtusiplicata, 193". 



plicatula, 205''-6^ 



quadricostata, 204°-5^ 



reticularis, gy''', ioo\ i02~, I03^ 

 i95'-96'. 



robusta, 194^ 



rugosa, 100', ig&^-gy^. 

 Avicula emacerata, 207^ 



orbiculata, 2o8^-9\ 



subplana, 208'. 



Bakewell, R., cited, 253". 

 Ballou, H. W., cited, 2531 

 Barrandella, 191". 



fornicata, 191^ 

 Batostomella, i64°-65\ 



granulifera, i64*-65\ 

 Bed and stratum, distinction between, 



I08^ 

 Beyrichia symmetrica, 219". 

 Bibliography of geology of Niagara 



and Great lakes, 2531-62. 

 Biddle stairway, II^ 

 Bigelow, cited, 49'. 

 Bigsby, mentioned, 6'. 

 Birdseye view of Niagara region, 



2f. 



