INDEX TO VOL. 1. 7: 
Tron sulphate, 4, 33, 34. 
Iron sulphide, 4 oN ai 
Irpex, 3, 67. 
Isomastigoda, 2, 20, 32. 
Joints in clay, 4, 27, 41, 62. 
Kames, formed at ice halts, 4, 
23. 
Kaolin, absence of, in eastern 
highlands of Connecticut, 
4, 23. 
analyses of, 4, 52. 
composition of, 4, 40. 
deposits of, in Connecticut, 
415. 
fusing point of, 4, 31. 
hardness of, 4, 41. 
homogeneity of, 4, 42. 
in clay, 4, 16. 
in New England, conditions 
for finding, 4, 69: 
limonite with, 4, 32. 
mining of, 4, 71. 
Kaolin of West Cornwall, com- 
position and properties of, 
4, 30, 31, 57. a 
places to which it is 
shipped, 4, 71. 
specific gravity of, 4, 42. a 
structure of, 4, 41. 
Kaolinization of crystalline 
rocks, 4, 22. 
Kauffman, C. H., 3, 6. 
Kent, Conn., 4, 15. 
Kerona, 2, 56. 
Ketch Brook, 4, 13. 
Kilns, scove, 4, 83. 
up-and-down draft, 4, 85. 
King’s Island, 4, II, 12. 
Kirchner, O., 2, 8. 
Lachnocladium, 3, 73, 74. 
Lacrymaria, 2, 40, 45. 
Lactarius, 3, 18, 20. 
Lacustrine clays, 4, 20, 57, 58). 
6 
2. 
Lagenophrys, 2, 63. 
Lake at Berlin, Middletown, and 
Cromwell, 4, 24. 
Lakes, cause of temporary, 4, 23. 
clays formed in, 4, 70. 
draining of, 4, 28. 
Lamination of clay, 4, 26. 
Lancaster, Penn., 4, 78. 
Lantern Hill, quartz produced 
at, 4, 72. 
Lean clay, 4, 47; 75- 
Lecquereusia, 2, 13, 15- 
Lecythium, 2, 13. 
Leidy, Joseph, 2,.5. 
Lembadion, 2, 42, 50. 
Lentinus, 3, 18; 38. 
Lenzites, 3, 18, 37. 
Lepiota, 3, 17, 23. 
Lepocinclis, 2, 25, 27. 
Leptomonas, 2, 21, 23. 
Leptonia, 3, 19, 46. 
Leucophrys, 2, 40. 
Lieberkuhnia, 2, 13. 
Lime, effect of, on fusibility of 
clay, 4, 35, 48. 
effect of, on shrinkage of 
clay, 4, 36. 
in clay concretions, 4, 27. 
in Connecticut brick clays, 
4,50, 60, 61. 
in Glacial clays, 4, 29. 
in refractory clays, 4, 35. 
in slip clays, 4, 55. 
in vitrifying clays, 4, 53. 
in yellow and buff brick, 4, 
4. ; 
influence of, in clay, 4, 34. 
reactions of, with silica and 
sulphuric acid, 4, 34. 
Lime carbonate, behavior of, 
during burning of clay, 4, 
34. . 
in slip clay, 4, 65. 
in underburned brick, 4, 35. 
Limestone, clay in, 4, 18. 
regions of, 4, 34. 
Limonite, composition of, 4, 40. 
from oxidation of pyrite, 4, 
34. 
mode of occurrence in clay, 
4, 32. 
water in, 4, 38. 
Lionotus, 2, 42, 51. 
Litchfield County, 4, 15. 
Lithia in clay, 4, 36. 
Loam, clay tempered with, 4, 75. 
Loess, 4, 21, 55- 
Long Island, 4, 19, 23, 87. 
Loughlin, G. F., 1, 11, 4. 
Loxodes, 2, 42, 52. 
Loxophyllum, 2, 41, 46. 
Mean carbonate of, 4, 36, 
5. 
effect of, on fusibility of 
clay, 4, 48. 
in Connecticut clays, 4, 59, 
60, 61. 
in Glacial clays, 4, 20. 
in refractory clays, 4, 35. 
in slip clay, 4, 55. 
