PRELIMINARY REPORT ON PEAT.

HASKINS, H. D. The utilization of peat as a source of nitrogen for plant food
Jour. Am. Peat. Soc. 3" 41-46. pl. I. I9IO.
HILGARD, E. W. Soils: their formation, properties, composition, and relations
to climate and plant growth, in the humid and arid regions. 593 pp. and
numerous illustrations. New York, 19o6.
Reviewed in Science II. 24: 681 :684. Nov. 30, 19o6; and in Torreya 7: 170-175. Aug. 1907. Contains valuable notes on humus, peat, etc., on pages 120-141.
HINDSHAW, H. H. Peat. U. S. Geol. Surv. Mineral Resources 1904: 1229-1234.
1905.
Contains a bibliography. Florida peat briefly mentioned on page 1231.
HOLMES, J. A. (and others.) Preliminary report on the operations of the fuel
'testing plant of the United States Geological Survey at St. Louis, Mo.,
1905. U. S. Geol. Surv. Bull. 290. 240 pp. 19o6.
Bibliography of peat, arranged chronologically, on pages 1 i-I5. Tests of peat, including some from Florida, on pages 133-135.
KEARNEY, T. H. Report on a botanical survey of the Dismal Swamp region.
Contr. U. S. Nat. Herb. 5:i-x, 32T-550, pl. 65-73, f. 51-84, and 2 folded
maps. 19O1.
Reviewed in Bot. Gaz. 34: 384-385. 1902.
KEYES, C. R. Origin of coal. Iowa Geol. Surv. 2: 41-53, f. I-3. 1894.
KUMMEL, H. B. The peat deposits of New Jersey. Econ. Geol. 2: 24-33, f. I.
1907.
Essentially a resume of the report of Parmelee & McCourt, mentioned below.
MACBRIDE, T. H. (Peat in Humboldt County, Iowa.) Ia. Geol. Surv. 9: 145.
I898.
MAcNIDER, G. M. Some notes on the swamp lands and peat deposits of North
Carolina and chemical analyses of North Carolina peats. Jour. Am.
Peat SoC. 2: 56-6I. I9O9.
PAMMEL, L. H. Flora of northern Iowa peat bogs. Iowa Geol. Surv. i9:
735-777, f. IO6-117. "1909" (I9IO). (Also reprinted, with the addition
of a 7-page index, as Contr. Bot. Dept. Iowa State Coll. No. 40).
Contains list of 255 native and introduced Iowa bog and marsh plants, with a considerable number from other states interpolated; also a bibliography, with many of the dates lacking. It is interesting to note that according to the list of plants there are no Ericaceae and no Sphagnum in the Iowa bogs.. One of the causes of this state of affairs is probably the predominantly calcareous soil of Iowa.
PARMELEE, C. W., & McCOURT, W. E. A report on the peat deposits of northern
New Jersey. Ann. Rep. State Geol. N. J. 1905: 223-313, pl. 30 and folded
map. i9o6.
Reviewed in Jour. Am. Peat Soc. I: 21. 1908. Contains very little botanical information, but many analyses and useful technical details, and an extensive biblography (with incomplete titles).

361