I NDEX 



The superior figures tell the exact place on the page in ninths; e. g. 520* 

 means page 520, beginning in the third ninth of the page, i. e. about one 

 third of the way down. 



Abbey, the, 543«. 

 Acidaspis trentpnensis, 526^ 

 Aeglina, 510-. 



(rediviva Barr?), 562». 

 Agnostus, 510^ 562'. 

 Albany, rural cemetery, 52S'-29^; 



old Dudley observatory, 529''; 



penitentiary, 530^. 

 Ambonychia radiata, 493". 



undulata, 502*. 

 Ami, H. M., cited, 583*, 489«, 508«- 



IIS 528^ 546^ 562S 566^, 567», 

 Ampyx, 510^, 510*, 561*, 562^ 

 hastatus, 546«, 547^ 585'. 

 Annelida, 573«-74^ 

 Aparchites minutissimus, 521*, 521*, 



522^ 

 Archinacella patelliformis, 516*, 



516«, 520«, 525^ 526^ 527». 

 Asaphus platycephalus, 503'. 



vetustus, 501\ 

 Ashburner, C. A., cited, 583*, 560». 

 Avicula trentonensis, 502*. 



Balanidae, 578^ 



Barrande, cited, 580^ 



Bathyurus, 510=^. 



Beaver park, 530". 



Beecher, C. E., cited, 582^ 502^-3-, 



525», 526^ 529^ 564«. 

 Beekmantown limestone, 544^ 

 Bellerophoh bilobatus, 499^ 500', 

 502?, 520S 525^ 527^ 

 cancellatus, 493^ 502^ 

 Beyrichia oculifera, 575*. 



Billings, E., cited, 581», 494*. 



Birdseye limestone, 544^ 



Bishop, I. P., cited, 583S 505', 554% 



569«. 

 Black creek, Voorheesville, 53r-82*. 

 Block island, Cohoes, 516'-17S 

 Bollia, 545^ 

 Booth, H., cited, 582'. 

 Brachiopoda, 569^-72*. 

 Brothers's quarry. South Troy, 535'- 



37*. 

 Buttermilk fall, Watervliet, 528\ 

 Bythotrephis subnodosa, 499*, 500*. 



Cahiirs hill. South Troy, 539*. 

 Calciferous sandstone, 544^ 

 Callopora, 547^ 



ampla, 545". 



cf. ampla, 544*. 



multitabulata, 545*. 

 Calymmene sp., 521-. 



senaria, 503^ 525«, 526^ 

 Camarella hemiplicata, 505*. 

 Cameroceras proteiforme, 516*, 517*, 



524', 526^ 532S 532«. 

 Canada, graptolite faunas, 508*. 

 Canadian survey, effect on correla- 

 tion of Hudson river shale, 494*. 

 Cantonment hill, 546®. 

 Carinaropsis orbiculatus, 493*. 



patelliformis, 493'. 

 Castleton, Moordener kill, 543M4'. 

 Ceratocephala (Acidaspis) trenton- 

 ensis, 526^ , 

 Ceratopsis, 575^ 



