478 



(5) The yield of husks increased and decreased with the yickl of souDd and soft 

 kernels, as was t;o be expected. 



((3) The yield of cobs showed irregularities which create snspiciou of errors in 

 •weigliiug. 



(7) The dent variety showed nearly the same course as the Hint variety in the 

 increase and decrease of sound and soft kernels and leaves, due to rate of planting, but 

 there was a striking difference in the water-free weight of stripped stalks. While the 

 weight of water-free stalks of the flint variety was greatest where the plants stood 

 one to a foot in the row, the \^ eight of water-free stalks of the dent variety increased 

 steadily with the thickness of stand, and was greatest where the stand was thickest — 

 eight plants to a foot. 



Proporlions of kernels, leaves, stalks, etc., in the water-free crop. — (1) The proportion 

 of sound kernels of the flint variety to total water-free crop increased with thickness 

 of planting up to a stand of two stalks to a foot, and then, with closer planting, 

 decreased rapi.lly, while the proportion of kernels of the dent variety to total crop was 

 greatest when the stand was one stalk to 2 feet, and the proportion decreased with 

 thicker planting. The extra phosphate increased the proportion of sound kernels of 

 flint maize, but rather decreased it in the case of the dent variety. 



(2) The proportion of leaves to total dry crop was largest where the propor- 

 tion of sound kernels was smallest. The extra phosphate decreased the jiroportiou 

 of dry weight of leaves of the flint variety, but increased the jjroportiou of leaves of 

 the dent variety. 



(3) The proportional yield of stripped stalks showed some irregularities, but in 

 each variety the relative yield of canes was largest where the stand of maize was 

 thickest. The proportion of dry weight of stalks of the dent variety increased regu- 

 larly from the plat where the stand was one stalk to 2 feet up to the thickest stand. 

 It was not materially changed by the addition of extra phosphate. 



rercenlage composition of the dry matter in the field-cured crops. — The per cent of ash 



■ and albuminoids in the water-free crop was greatest where the stand of maize was 



thinnest and decreased regularly as the stand was thicker, being least where the 



plants stood closest. This difterence was quite small in the case of ash, but very 



large in the case of albuminoids. 



The per cent of fiber was largest where the stand was thickest and probably 

 decreased pretty regularly as the stand of maize was thinned. There was the largest 

 percentage of nitrogen-free extract where the stand of maize was neither very close 

 nor vei-y thin, but from two to four stalks to a foot. 



Total quantities of ivater, ash, albuminoids, etc., harvested from each plat. — A study of 

 the results with the, flint variety shows: 



(1) The quantity of ash, of albuminoids, of fiber, of nitrogen-free extract, and of 

 fat, every valuable ingredient in the cvo\), was largest when the plants stood one to 

 a foot. 



(2) A stand of two to a foot produced very little more of any ingredient than a 

 stand of one to 2 feet. The single exception to this is nitrogen-free extract. • * » 



Examining the results with the dent variety of maize, it appears: 



(3) The quantity of ash or mineral matter, of albuminoids, of nitrogen-free extract 

 and of fat was largest when the plants stood two to a foot, but the largest quantity 

 of fiber was produced by the thickest planting, eight plants to a foot. 



(4) A stand of one jilant to a foot i)roduced more of every ingredient except fiber 

 than a stand of four to a foot, so the rate which would have given the maximum 

 yield was either two to a foot or betweeu one and two to a foot. 



(5) In every case the extra phosphate produced an increase of all the ingredients 

 of the crop. 



Comparative development of the individual maize plant. — Examination of the figures 

 shows that the individual plants which stood farthest apart, and had the most light 

 and the most soil at their disposal attained the greatest development in all their 



