INDEX. 391
PAGE
Peat, analyses of ....................................................... 298-305
as agricultural soil .............................................. 310-312
bibliography of....................... .................358-366
conditions necessary for formation of ............................ 211-212
definition of............................................ 209-211
deposits, classification of ................................ 205-2o6, 230-232
general distribution of .......................................... 212-214
investigation of ................................................. 12, 199
paper on .......................... ........................... 197
uses of .................................................... 210,3o6-3o9
Peat prairies .............................................231, 274-276, 300,303
Pebble conglomerate in phosphate-bearing formation .................... 22, 31
Pebble phosphate, description of.....................................23
production of in 1909 ................................40, 41
Peck, I. C., log of well by .............................................. 147
well drilled by ............................................. 148
Peck, L. A., well of..............................................187
Penial, w ell at ........................................................ 165
Pensacola, wells at ................................................... 124
Peoria, w ell at ......................................................... I59-16o
Perry, well at ................................................. 123, 125
Petion, Paul, well of. ..............................................174
Phosphate, origin of ................................................... 31
Phosphate, paper on ................ ..........................17-41
Phosphate companies operating during 1909................................. 39
Phosphate deposits, irregularity of ...................................... 23
Phosphate in lime-sink region....................................221
Phosphate rock, description of .......... ............................. 23
Phosphate-bearing formation, relation of to underlying formations ..........24
thickness of ...............................:29, 30
Phosphorus, amount removed by solution............................... 51
Physa ................................................................... 28o
Picolata, well at ..................................................... 148-149
Pierce Phosphate Co., exposures in pits of..........................35, 37
Pierson, wells at........ ..................................... 181
Pierson, N. L., well of ................................................ 181
Pilsbry, H. A., shells examined by.................280
Pisidium ............................................................. 280
Planorbis ............................................................. 280
Plant City, exposures of phosphate near ................................ 35
Plate and fragmental phosphate rock, origin of ......................... 31
Plate rock phosphate, description of................................. 28
stratification of ............................... :28
Pleistocene of eastern Florida....................................... 91
Pliocene of eastern Florida ............................................ 90
Pocosins of North Carolina...................................... 257
Polk Co., phosphates of ............................................ 36
wells of ................................................ 123
Polygyra ......................................................... 280
Prairie Pebble Phosphate Co., exposures in pits of ...................... 36
Prairie lands, description of......................................... 97