12 



percentage of phosphoric acid is only a little smaller than 

 the average found in the earlier stage. This fact, taken 

 in connection with that of a high percentage of nitrogen 

 and a low yield ot cotton, might suggest the possibility 

 of a case of arrested development. It will be observed 

 that with rare exceptions the percentages of all the constit- 

 uents are higher in the garden than they are in the field, 

 and from this the conclusion may be drawn that there is a 

 deficiency of potash, phosphoric acid, and nitrogen in the 

 field. The smaller yield of cotton in the field strengthens 

 this conclusion. 



Table IV following, gives the summary of results con- 

 tained in Table III, and is submitted without comment. 



Table IV. 

 GENEKAL SUMMAEY. 



For convenience of comparison and study, it has been 

 thought advisable to present Table V following, which is a 

 consolidation of Tables I and III. 



