INDEX 



Page numbers referring to descriptions of fossils are printed in black face type. 



Acephala, 119. 

 Acervularia, 26, 27. 

 Acleistoceras, 95. 

 Agassiz, A., cited, 116. 

 Allen creek section, 17-18. 

 Ambonychia acutirostra, 48. 



acutirostrum, 48. 



aphaea, 48. 



mytiliformis, 49. 

 Ammonites, 120. 

 Amplexus, 124. 

 Annelida, 105-6. 

 Anthozoa, 23-36. 

 Arey, Albert L., acknowledgments to, 3 ; 



cited, 8, yy ; collection of fossils, 8. 

 Asaphus stokesi, 108. 

 Astrocerium parasiticum, 29. 



pyri forme, 29. 



venustum, 29. 

 Atrypa, 6, 128. 



cuneata, 46. 



neglecta, 45. 



nitida, 44. 



reticularis, 21. 

 Avicula subplana, 49. 



triquetra, 6. 



undata, 50. 



Bactrites, 95. 



Bahamas, salt lagoons, 118. 



Barrande, cited, 98, 102, 104. 



Barre, Guelph dolomites, 17. 



Barrois, cited, 59. 



Barton beds, 21. 



Belemnites, 120. 



Bell, Robert, cited, 6; observations, 7. 



Bellerophon, 51-54. 



leda, 54. 



lyra, 54. 



(Bucania) perforatum, 54. 



shelbiensis, no, 51-54. 

 explanation of plate, 150. 



tuber, 52. 

 Bellerophontidae, 53, 54. 

 Bernard, Felix, cited, 119. 

 Billings, cited, 27, 40, 52, 57, 71, 87, 88, 



125. 

 Bourgeat, Abbe, investigations of, 119. 

 Boyd, G. W., fossils obtained by, 5. 

 Brachiopoda, 5, 38-47, 113, 114, 120, 125, 



127, 128, 131. 

 Brighton, exposures, 18. 

 Bucania, 52, 53. 



angustata, 54, 56, 59, 127. 



chicagoensis, 57. 



devonica, 53. 



expansa, 52, 53. 



perforata, see Bellerophon (Bucania) 

 perforatus. 



profunda, 53. 



stigmosa?, 51. 



sulcatina, 52. 

 Bucaniidae, 53. 

 Bucanopsis, 54. 

 Bumastus barriensis, see Illaenus (Bumas- 



tus) ? barriensis. 



Calvin, Dr Samuel, cited, 128. 

 Calymene blumenbachii, 107. 



var. niagarensis, 107. 

 Calymmene, 107. 



niagarensis, n, 107, 112, 133. 



