254 SOIL SCIENCE [Bot. Absts., Vol. IV, 



iag while most of the commercial orchards occur on the latter. — Sixteen per cent of the county 

 is covered with glacial lake sediment (Dunkirk series) while almost as much more is mantled 

 with kame and kettle debris, outwash and delta material and alluvium embracing a number 

 of minor series and types. The sandier phases predominate in these heterogeneous soils and 

 grow excellent beans, silage corn and potatoes. The heavier phases, especially of the Dun- 

 kirk, are adapted to grass and grain. — Meadow lands of little value cover 6 per cent of the 

 county. Muck of slightly greater extent and of much higher value also exists in scattered 

 areas. Excellent onions, lettuce, celery and beets are raised on this soil. — H. O. Buck-man. 



1680. Winston, R. A., R. W. McClure, H. P. Cooper, and D. C. Wimer. Soil survey 

 of Clearfield County, Pennsylvania. Advance sheets — Field operations Bur. Soils, U. S. Dept. 

 Agric. 1916: 5-32. Fig. 1 and map (colored). 1919. — Clearfield Count}' is situated entirely 

 within the Alleghany Plateau just west of the center of the state. It is marked by a steeply 

 rolling to hilly topography although level or gently sloping areas occur on hill crests. The 

 drainage is northeastward into the West Branch of the Susquehanna. — Excellent railroad 

 facilities are available in the county. Public roads are numerous and well kept. Coal 

 mining and lumbering are the principal industries although agriculture is practiced over all 

 of the county except the hilly unproductive northern section. — The climate is healthful. 

 The winters are cold and the summers cool and pleasant. The mean temperature is 46°F., 

 the mean for January being 23°F. and that of July 70.6°F. A well distributed rainfall of 44 

 inches occurs. The growing season ranges from 116 to 154 days. — The soils of the county are 

 largely of the Dekalb series, an upland residual soil from the shales and sandstones of the 

 Coal Measures. This series universally is in need of lime. Twenty per cent of the series is 

 too rough and stony for cultivation. The level portions, however, are quite productive when 

 well managed. Gravelly, sandy and stony types predominate. — The alluvial soils of the area 

 are not extensive as the streams flow through narrow valleys. When such soils occur they 

 are usually wet and unproductive. Second bottom deposits (Holston series) while of very 

 small area are rich and grow excellent grain, hay and truck. — Corn, oats, wheat, buckwheat, 

 rye, timothy, clover, potatoes and vegetables are the principal crops. Alfalfa is raised in 

 small acreage. Apples, pears, plums and cherries are grown but usually only for home use. 

 Dairying is carried on in a small way. Some hogs, sheep and beef cattle are raised on almost 

 every farm. — H. O. Bvckman. 



PEAT AND MUCK 



1681. Anonymous. New Jersey peat industry in 1917. Jour. Amer. Peat. Soc. 12: 188. 

 1919. — Peat production for fertilizer was greatly stimulated during the war. New Jersey 

 leads all the other states in this. The peat is mostly treated chemically and then inoculated 

 with bacteria to increase its fertilizer value. Some peat is used as an antiseptic and some 

 for stock feed. — G. B. Rigg. 



1682. Bottomley, W. B. Nucleic derivatives from peat. Jour. Amer. Peat Soc. 12: 226. 

 1919.— See Bot. Absts. 4, Entry 1488. 



1683. Cutting, M. C. Peat soils of Minnesota and their cultivation. Jour. Amer. Peat 

 Soc. 12: 190-194. 1919- See Bot. Absts. 4, Entry 54. 



1684. Feilitzen, H. vox. Cultural experiments on moor lands. Jour. Amer. Peat Soc. 

 12: 216-217. 1919.— See Bot. Absts. 4, Entry 64. 



MISCELLANEOUS 



1685. Jennings, A. C. The economic aspect of irrigation. Rhodesia Agric. Jour. 16: 

 429-432. 1919. 



