26 



GEORGIA. 



Georgia Agricultural Experiment Station. 



Department of State College of Agriculture and Mechanic Arts, University of Georgia, 



Location, Athens. Director, W. L. Jones, M. D. 



bulletin no. 2, january, 1889. 



Factoks in agricultural investigations, W. L. Jones, M. D. 

 (pp. 11-16). — An iutroductory article. 



Ash ANALYSES OF NATIVE WOODS, H. C. WHITE, PH. D. (pp. 17- 



26). — A Dumber of the more common native woods of Georgia were 

 analyzed with a view to determine: (1) Their fuel value; (2) the 

 amount aud character of the mineral matter they contain 5 (3) the ma- 

 nurial value of the ash as commonly obtained. The woods examined 

 were black hickory {Carya tomentosa), red oak {Quercus ruhra)^ white 

 oak [Quercus alba), post oak (Quercus ohtusiloha), yellow pine {Finns 

 mitis), old field pine (short-leaved — the common variety of the up- 

 country — probably Pinus mitis), black pine (so called), dogwood {Cornus 

 Jlorida), red majile {Acer ruhrum), ash {Fraxiims americana), chestnut 

 {Castanea vulgaris), and sycamore {PJatanus occidentalis). The results 

 of the analyses are given in a series of tables. 



Origin of soils geologically considered, J. W. Spencer, 

 A. M., Ph. D. (pp. 27-31). — This contains notes on the origin of soils. 



The imported cabbage butterfly (Pieris rap^), J. P. Camp- 

 bell, Ph. D. (pp. 32-35). — A compiled account of this insect. 



Field experiments with phosphates and kainit applied to 

 cotton, W. L. Jones, M. D. (pp. 35-37). — The object of these ex- 

 periments was to compare the relative manurial values of phosphoric 

 acid in acid phosphate, phosphate slag (Pine-Thomas process), and 

 floats, and of kainit " in combinations such as are frequently used by 

 farmers." The experiments were made on plats of one- tenth acre each. 

 Each manured plat was duplicated. The kind of manure, rate per acre, 

 and yield per acre in seed cotton are given. Attention is called to the 

 variations in the yields of the unmanured plats, which, as is very com- 

 mon in such experiments, "shows forcibly the difficulty of getting a 

 correct standard of comparison." 



Aside from the inequalities of soil, the season was unfavorable and it is 

 difficult to draw satisfactory conclusions. "Of phosphates, acid phos- 

 phate appears to lead, slag comes next, and the floats are last, * * * 

 but when the relative cost of the acid phosphate and slag are consid- 

 ered, the apparent difference in favor of the phosphate is much reduced. 

 Where kainit is used, other ingredients of fertilizer remaining the same, 

 the yield is slightly increased." 



