[Lists summarizing results of studies of average growth] 90-91 



[Illinois counties classified on basis of soil reports: (1) those 

 for which maps are available; (2) those for which unpub- 

 lished information is available; (3) those for which no in- 

 formation is available] 92 



(2) Studies of yields 92 



Post-oak type 93 



Scrub-oak type 94 



Upland hardwood type 94 



Bottomland type 95 



Yield tables for even-aged stands in Illinois 95 



(1) Upland types: 



Post-oak type 95 



Scrub-oak type 96 



Upland hardwood type 96 



(2) Bottomland type: 



[Rapidly growing species] 96 



[Slow-growing species] 97 



(3) [Fully stocked virgin stands:] 



Upland hardwoods ■. 97 



Bottomland stands 97 



Part III. Proposed state forest policy 98 



Conclusion 101 



Literature cited 102 



ARTICLE II. RECENT INSECTICIDE EXPERIMENTS IN ILLINOIS 

 WITH LUBRICATING OIL EMULSIONS. BY S. C. CHANDLER, 

 W. P. FLINT, AND L. L. HUBER. (2 Text-figures) May, 1926. . . 103-126 



Introduction 103 



Experiment in Jolly orchard, Olney, Illinois, spring of 1922 104 



Experiments in University orchard, Olney, Illinois, winter of 1922-23. 105 



The theory of emulsion 106 



The use of a solid as an emulsifler 106 



The use of soap as an emulsifier 106 



Increase in volume of boiled emulsions 108 



De-emulsification 109 



Combination of oil emulsion with other materials Ill 



Comparison of boiled emulsions with lime sulfur and various mis- 



cible oils 112 



Experiments in Hartline orchards, Anna, Illinois, winter of 1923-24. . 113 



A comparison of oils for oil emulsion 119 



A comparison of boiled fish-oil-soap emulsions and cold-mixed emul- 

 sions 119 



Vegetable-oil-soap emulsions 121 



Summer sprays with oil emulsions, 1923 and 1924: foliage tests.... 121 



Scale tests, summer of 1923' 123 



