4 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. 
Connecticut clays, alumina in 4, 
3I. 
analyses of, 4, 59, 60. 
composition and properties 
of 4, 58. 
fluxes in, 4, 31. 
geological history of, 4, 22. 
microscopic examination of, 
4, 59. 
origin of, 4, 22. 
physical properties of, 4, 62. 
plasticity of, 4, 45. 
prgaues brick made from, 4, 
silica in, 4, 30. 
Contorted layers in clay, 4, 13, 
26, 27. 
Cook, G. H., 4, 36. 
Copperas in clay, 4, 33. 
Coprinus, 3, 20, 50. 
Cornwall Hollow, 
posit at, 4, 15. 
Cothurnia, 2, 63. 
Cothurniopsis, 2, 63. 
Corticium, 3, 70, 72. 
Cortinarius, 3, 18, 40. 
Cracking, in drying and burning 
of clay, 4, 42. 
prevented by quartz, 4, 30. 
Craterellus, 3, 70, 71. 
Crepidotus, 3, 18, 42. 
Crockery, quartz shipped for 
manufacture of, 4, 72. 
Cromwell, clay at, 4, 13, 24. 
Crosby, W. O., 4, 7. 
Cross-bedded gravel, high de- 
posits of, 4, 23. 
Crushing strength of brick, 4, 
kaolin de- 
44. 
Cryptoglena, 2, 24, 26. 
‘Cryptomonas, 2, 33, 36. 
Cyathomonas, 2, 32, 35. 
Cyclidium, 2, 42, 51. 
Cyclomyces, 3, 55, 61. 
Cyphella, 3, 70, 71. 
Cyphoderia, 2, 13. 
Dactylospherium, 2, 12, 14. 
Dedalea, 3, 55, 62. 
Dallasia, 2, 41, 49. 
‘Dams of gravel deposit, 4, 24. 
Decomposition of rocks, 4, 16. 
Decoration of pottery, 4, 88, 86. 
Deltas at ice halts and lake 
margins, 4, 20, 23, 26, 28. 
Dendrocometes, 2, 65. 
Dendromonas, 2, 21. 
Dendrosoma, 2, 65. 
Density, of clay, 4, 38 41, 42, 43, 
Deposition of clay, duration of, 
4, 26. 
Dexiotricha, 2, 41, 50. 
Diaphoropodon, 2, 13. 
Didinium, 2, 42. 
Difflugia, 2, 12, 15. 
Dileptus, 2, 40, 46. 
Dilution of brick clays, 4, 54. 
Dimorpha, 2, 20. 
Dinobryon, 2, 21, 23. 
Dinoflagellata, 2, 19, 39. 
Dinomonas, 2, 29, 31. 
Diplophrys, 2, 14, 16. 
Disintegration of rocks, 4, 16. 
Disintegrator, 4, 75, 76. 
Dissected plain in northern 
Connecticut, 4, 28. 
Ditrema, 2, 14. 
Doassansia, §, 37. 
deformans, 5, 39. 
Martianoffiana, 5, 38. 
obscura, 5, 39. 
occulta, 5, 38. 
opaca, 5, 38. 
Dolomite, composition of, 4, 40. 
Double-coal brick, 4, 83. 
Down-draft kiln, 4, 85, 88. 
Drain tile, 4, 65, 89. 
Drumlins, 4, I9. 
Drying of clay and brick, 4, 37, 
42, 82. 
Dry-press machine, 4, 80. 
Dump-table, 4, 81. 
sy isc manufacture of, 4, 
5. 
clays, 4, 51, 54, 55. 
East Liverpool, Ohio, 4, 71. 
Eccilia, 3, 19, 48. 
Edger, use of, 4, 82. 
Efflorescence of soluble salts, 4, 
34, 37, 38, 46. 
Elmwood, analysis of clay from, 
_ 4 59, 60. 
Elvirea, 2, 29, 31. 
Emerson, B. K., 4, 26. 
Enchelys, 2, 40, 44. 
Engler, A., 3, 12. 
Entoloma, 3, 19, 46. 
Entosiphon, 2, 30, 32. 
Entyloma, 5, 33. 
crastophilum, 5, 35. 
Linariz, 5, 36. 
lineatum, 5, 34. 
Lobelia, 5, 35. 
Nymphee, 5, 37. 
