74 .PUBLIC PARKS OF IOWA 



W. Hawker and W. H. Johnson in a U. S. Dept. of Agr. 1916 Report, 

 "Soil Survey of Muscatine County, Iowa," state: 



"The main occurrence of the Lindley silt loam is on the bluff slopes 

 extending from the upland to the alluvial bottoms, and back along the 

 deeply eroded stream channels draining the uplands. By far the greater 

 part of the total area mapped occurs in the eroded area east of Musca- 

 tine. The type is forested, the growth being the same as that of the 

 Memphis silt loam, with which this soil is associated. 



"Forestry and pasture are the only uses to which the type can be de- 

 voted. West of Muscatine some groves of walnut are found on the bluff 

 slope; these are valuable chiefly for cabinet and furniture wood. The 

 area of the type under cultivation is so small that no data on crop yields 

 could be obtained. Cultivated crops suffer from excessive drainage, 

 drought, and the disastrous erosion to which the sharp slopes of the 

 type are subject." 



Trees of the Region. The following trees were observed: White pine 

 (Pinus strobus) on the sandstone slopes, white oak (Quercus alba), red 

 oak (Q. rubra), bur oak (Q. macrocarpa), barren oak or black oak (Q. 

 ellipsoidalis), chestnut oak (Q. acuminata), swamp white oak (Q. plata- 

 noides), white ash (Fraxinus americana), green ash (F. pennsylvanica 

 var lanceolata) in low grounds, shagbark hickory (Carya ovata), mocker- 

 nut or white heart hickory (Carya" alba), pignut or bitternut (Carya 

 cordiformis), black cherry (Prunus serotina), choke cherry (P. virgini- 

 ana), iron wood (Ostrya virginiana), blue beech (Carpinus caroliniana), 

 river or black birch (Betula nigra) in low grounds, sycamore (Platanus 

 occidentalis), basswood (Tilia americana), wild crab (Pyrus lowensis), 

 American plum (Prunus americana), service berry (Amelanchier cana- 

 densis), red haw (Crataegus mollis), C. Margaretta, C. punctata, box 

 elder (Acer negundo), soft maple (A. saccharinum), black sugar maple 

 (A. nigrum), sugar maple (A. saccharum), quaking aspen (Populus 

 tremuloides), large toothed aspen (P. grandidentata), cotton wood (Popu- 

 lus deltoides), black willow (Salix nigra), almond leaved willow (S. 

 amygdaloides), cordate willow (Salix cordata), honey locust (Gleditsia 

 triacanthos), coffee bean (Gymnocladus dioica), slippery elm (Ulmus 

 fulva), white elm (U. americana), hackberry (Celtis occidentalie), red- 

 bud (Crcis canadensis). 



The shrubs observed by the writer in the region are as follows: Prick- 

 ly ash (Xanthoxylum americanttm), dogwood (Cornus asperifolia, C. cir- 

 cinata, C. amomum, C. alternifolia), hazel (Corylus americana), prairie 

 willow (Salix humilis), rose (Rosa blanda), lead plant (Amorpha canes- 

 cens), wild indigo (Amorpha fruiticosa), New Jersey tea (Ceanothus 

 americanus), sumach (Rhus glabra), black cap raspberry (Rubus occi- 

 dentalis), red raspberry (R. idaeus var aculeatissimus), black berry (R. 

 cuneifolius, R. villosus), honeysuckles (Lonicera glauca), bush honey- 

 suckle (Dievilla trifida), black haw (Viburnum Lentago), haw (V. pu- 

 bescens), huckleberry (Glylussacia baccata), wild grape (Vitis vulpina, 

 V. labruscae), Virginia creeper (Psedera quinquefolia), gooseberry 

 (Ribes gracile, R. cynosbati). 



Herbaceous Plants. A few of the herbaceous plants noted by the 

 writer are as follows: Anemone (Anemone nemorosa), wood sorrel 



