356 
Seerey, Daniel F. 
1918. Small sawmills, their equipment, construction and operation. 
Bul. 718, U. S. Dept. Agr. Contribution from the Forest Service, 
Washington, D. C. 
Spaeth, J. Nelson 
1920. Growth study and normal yield tables for second growth hard- 
wood stands in New England. Harvard Forest Bul. No. 2. Peter- 
sham, Mass. 
Trelease, Wm. T. 
1896. Juglandaceae of the United States. Seventh Ann. Rep. Mo. 
Botanical Garden, p. 25. 
Weller, Stuart, et al., in co-operation with the U. S. Geol. Survey 
1920. The geology of Hardin county and the adjoining part of Pope 
county. Bul. 41, Ill. State Geol. Survey, pp. 43-44. Urbana, 
Illinois. 
