540 



The calculated amount of fertilizing ingredients contained in a crop 

 of cotton (air-dry) yielding 300 pounds of lint per acre is given as follows : 



Fertilizing conatituenta contained in a crop of cotton yielding 300 pounds of lint per acre. 



Nitrogen 



I'liosplioric acid. 

 PotaHsium oxide 



Pounds per acre. 



In 300 



pounds 



lint. 



Pounds. 

 0.72 

 0.18 

 2.22 



In 654 



pounds 



seed. 



Pounds. 



20.08 



6.66 



7.63 



In 404 



pounds 



bolls. 



Pounds. 



4.50 



1.14 



12.20 



In 575 In 658 



ftounds I pounds 

 eaves. stems. 



Pounds. I Pounds. 



13.85 5.17 



2.57 1.22 



6.57 i 7.74 



In 250 

 pounds 

 roots. 



Pounds. 

 1.62 

 0.38 

 2.75 



In 2,841 



pounds 



total 



crop. 



Pounds. 

 45.94 

 12.15 

 39.11 



In addition to the data mentioned above, previous studies of the com- 

 position of the cotton plant by Jackson, White, Pendleton, and Ville 

 are referred to, and brief suminaiies given of their results, together 

 with an abstract from the Tenth TJ. S. Census on the yield of oil and 

 by-products from cotton seed at oil mills. These latter data, expressed in 

 per cent of the whole seed as separated at the mills, and the '' actual" 

 percentage of parts of the seed are reported as follows : 



"The figures [in the last column] represent very closely the actual jjcr- 

 centages in the seed. Tho.so for kernels and hulls were taken from the 

 Annual Report of tlie North Tarolina Station for 1881, and are the 

 averages of a hirge niinibor of weighings. The percentage of lint is 

 taken from the Annual Iteport of the South Carolina Station for 1888, 

 and the percentage of oil is the average of a number of tests." 



FlKI.l) TESTS OF FKUTILIZEKS ON COTTON, J. B. McBUYDE, C. E. 



(pp. 135-141). — This consists of a summary of the results of experiments 

 at the South Carolina Station, reported in Bulletin Xo. 2 (new series) 

 of that station (see Experiment Station Kecord, vol. in, p. 534), on fer- 

 tilizers for cotton, and several formulas for fertilizer mixtures based on 

 these results. 



Feeding value of the cotton plant and its parts, J. B. 

 McBryde, C. E. (pp. 141-145). — Analyses with reference to food con- 

 stituents are given of the whole and parts of the cotton i>lant and seed, 

 and of the plant after picking, together with an analysis of dung from 

 animals fed cotton-seed meal and hulls. 



