392 



reports are icicking. White County happens to fall into this last 

 category. 



Under these circumstances the general aim of this thesis has been 

 a systematic report on the Native Trees of White County, their species 

 and relative numbers. Other related features have been included as 

 the result of a growing interest in the subject. The matter of ecology 

 was thought of seriously, but due to the lack of time and the as yet 

 unavailable soil report of the county*, this part has been reduced to a 

 very brief review of the physical and geographical aspects of the 

 county, and a consideration of the Tippecanoe River trees, with the 

 general distribution of trees over the county. As regards the economic 

 phases of White County trees, some isolated but interesting figures were 

 obtained. In this connection some historical data attaches another bit 

 of interest. Comparisons with State and national distribution by the 

 use of maps, illustrate clearly among ether things the need for further 

 work as well as the correction of past limits or errors. Attention is 

 also called to a new list of Hickories for the State according to Sar- 

 gent's latest determinations. Besides other minor features which need 

 not be mentioned here, I have been fortunate enough to include a new 

 variety of willow for the State, and possibly a new species of that 

 same genus. 



Geographical and Physical Aspects of White County. 



Before proceeding at once to the primary aim of this thesis, the 

 report of species and relative numbers, I have deemed it desirable to 

 point out certain other features, giving a general notion of the county, 

 topography, fertility of soil, drainage, transportation facilities, etc. 



White County is located in the northwe.stern part of Indiana and 

 possesses some of the best agricultural land in the world. The soil is 

 especially fertile in the southwestern half of the county, which is prairie 

 land. Black, rich soil in this area produces monster crops of corn and 

 oats, with nearly all the ground surface taken up in cultivation. Com- 

 paratively less timber is to be found in this region and very likely the 

 region has always been the less wooded part of the county — being for- 

 merly a vast sea. Boulders of the glacial age in many cases have been 

 removed to the fence rows. 



* Soil Survey made by U. S. Bureau of Soils. Summer 1915. 



