Index—Volume XV. 



Abert, Col. J. W., remarks on Guido 



and Raphael, 62. 

 Actinozoa, 96. 

 Agelacrinus pileus (?), 85. 

 Agelacrinus cincinnatienses, 85 ; 



internal, stricture of, 86. 

 Alcyonaria, 96, 151. 

 Algal vegetation, problematical 



statements regarding, 76. 

 Alveolites, genus defined, 147; A. 



granulosus, 150, 151. 

 Amaurochtete atra, 138. 

 Anapsis rufa, 124. 

 Anderson, W. P., resignation as 



trustee, 61. 

 Arcyria, 129. 

 Aster shortii, 55, 57; undulatus, 55, 



57; sagittifolius, 55, 56, 57 ; Lind- 



leyanus, 55, 56,57; cordifolius, 57. 

 Asters, variations and intermediate 



forms of certain, 55. 

 Atmospheric pressure, effect of, 



M. 15- 

 Atrypa, 163. 

 Aviculopecten germanus. Si ; reti- 



culaterarius, 82. 

 Bacteria, innocuous and baneful, 20. 

 Bacteriological Studies, progress 



of, 21. 

 Beatricea, genus defined, 94; re- 

 marks on, 94; zoological position 



uncertain, 94; B. nodulosa, 93, 95; 



undulata, 95. 

 Belleroplion bilobatus, 93. 

 Bigney, Dr. P. M., elected trustee, 62. 

 Brongniart, on position of Fu- 



coides, 76. 

 Butler, A. W., communication 



from, 61, 

 Byrnes, Dr. R. M., memoir of, with 



portrait, 71. 

 Ctunostroma, 165. 

 Calapcecia, 147; genus defined, 150; 



C. cribriformis, 150 



Carson, Dr. Wm., Weather, Water 

 and Disease, 5. 



Catlin, Capt., observations on neu- 

 ralgia, 25. 



Cerolites, a new order proposed for 

 Beatricea, 94. 



Chietetes, 153, 154; C. subglobosa, 

 158; turbinatum, 158. 



Cliondrioderma, 129. 



Clathropora clintonensis, 163. 



Clathroptychium, 136; genus de- 

 fined, 138; C. rugulosum, 138. 



Clinton group, fossils in, 163. 



Cloudy weather, depressing effect 

 of, 9. 



Ctenophora, 96. 



Coal, origin of, 76. 



Cold wave, defined, 13; notable, 13. 



Collier, T. B., report as Curator 

 Photographic Section, 69. 



Columnaria, genus defined, 97 ; C. 

 alveolata, 98, loo; calicina, 98; 

 hertzeri,99; (?) halli, 99. 



Columnopora, 147, 150, 151. 



Committee on treasurer's accounts 

 60; on A.J. Howe, report of, 62 

 on death of Dr. R. M. Byrnes, 62 

 on death of Mr. Joseph Green, 62. 



Constellaria, 155, 156. 



Consumption, a germ disease, 24. 



Corresponding member elected, 

 Wm. H. Knight, 61. 



Cribraria, 129, 136; genus defined, 

 139; C. argillaceae, 139; vulgaris, 

 140; dictydioides, 140, 141; ele- 

 gans, 140; purpurea, 141; tenella, 

 141 ; microcarpa, 141 ; caprea, 142. 



Crinoids, roots and stems of, loi. 



Cyclocystoides, 85 ; cincinnatiensis, 

 84; bellulus, 84; magnus, 84, 85. 



Cyclones, tests of constitutional 

 strength, 12. 



Cyclora minuta, 161. 



