INDEX TO VOL. I. Ik 
Sand, absence of, at some clay 
pits, 4, 75. 
added to clays, 4, 54, 75. 
along lake margins, 4, 28. 
effect of, on plasticity of 
clay, 4, 45. 
for molding, 4, 8o. 
in clay areas, 4, 12, 13, 70, 
71. 
in Connecticut brick clay, 
4, 60. 
in laminated clay, 4, 41. 
Sandstone ridges near Clayton 
clay area, 4, 13. 
‘Sandy texture in clay, 4, 14. 
Sanitary ware, kaolin used for, 
4, 58. 
Scaling of dry clay, 4, 37. 
‘Schaller, W. T., 4, 58. 
‘Schist, bowlders of, 4, 23. 
Schizonella, 5, 25. ° 
melanogramma, 5, 25. 
Schizophyllum, 3, 18, 39. 
Scoriaceous vitrification, 4, 49. 
Scove kiln, 4, 83. 
Scyphidia, 2, 62. 
Seams in clay, 4, 27. ” 
Sebethe River, 4, 13, 24, 25. 
Sedimentary clays, structure of, 
4, 41. 
‘Sedimentary rocks, 4, 18, 69. 
Seger cones, 4, 49. 
Semiporcelain, kaolin used for, 
4, 58. 
Sesquioxide of iron, 4, 31, 32. 
Settling of clay, a cause of un- 
dulations, 4, 27. 
Settling-tanks, 4, 71. 
‘Sewer pipe, adaptability of Con- 
necticut clay for, 4, 65, 89. 
Sewer profiles, records from, 4, 
12. 
Shale, 4, 18, 20, 57, 75. 
Shepard, C. U., 4, 15. 
Sherman, Conn., 4, 15. 
Shore lines, 4, 24, 25. 
Siderite, composition of, 4, 40. 
influence of, in clay, 4, 33. 
occurrence of, 4, 31, 32, 34. 
Sidewalks, brick in, 4, 
Silica, fusing point of, 4, 31, 30. 
in Connecticut brick clays, 
4, 60, 63. 
in Glacial clays, 4, 29. 
in presence of free bases, 
. 4 Bt. i 
an mineral silicates, 4, 31. 
Silica, influence of, in'clay, 4, 30.. 
union of, with lime; 4, 34. 
Silicates, altered, 4, 31. — 
ferromagnesian, 4, 31. 
lime in, 4, 34, 59. 
of alumina, effect of potash; 
on, 4, 36. 
of iron in burned clay, 4, 
33) 34 
silica in, 4, 31. 
Slaking of clays, 4, 33, 34, 63. 
Slates, 4, 20, 30. 
Slaty cleavage in clay, 4, 26. 
Slip clays, 4, 55, 62, 65, 89 
Slips or faults in clay, 4, 27. 
Smuts of Connecticut, 5. 
Soaking of clay, 4, 37. 
Soda, 4, 17, 30, 30. 
Sodium carbonate, 4, 30. 
Sodium sulphate, 4, 40. 
Solenophrya, 2, 65. 
Solution of lime carbonate by 
rain water, 4, 35. 
Sorosporium, 5, 26. 
Everhartii, 5, 26. 
Syntherismez, 5, 27. 
South Cheshire, 4, 24. 
South Glastonbury, 4, 72. 
South Manchester, 4, 23. 
South Windsor, 4, II, 59. 
Spathidium, 2, 40, 44. 
Spatter, 4, 82. 
Specific gravity, influence of, on 
fusing point of clay, 4, 
49, 50. 
of Connecticut brick clays, 
4, 63. 
of fire-clays, 4, 52. 
of quartz, feldspar, and: 
kaolin, 4, 42. 
range of, in clays, 4, 43. 
Sphacelotheca, 5, 21. 
Hydropiperis, 5, 22. 
Sorghi, 5, 22. 
Spherastrum, 2, 17. 
Sphzrophrya, 2, 65. 
Sphenomonas, 2, 26, 29. 
Spiromonas, 2, 29, 31. 
Spirostomum, 2, 53, 55. 
Spondylomorum, 2, 34, 37. 
Spongomonas, 2, 34. 
Springfield, Mass., 4, II. 
Statistics of clay industries of 
Connecticut, 4, OI. 
State Geological and Natural: 
History Survey of Con+ 
necticut, 1. 
