LETTER OF TRANSMITTAL. 
Porto Rico AGRICULTURAL EXPERIMENT STATION, 
Mayaguez, Porto Rico, May 1, 1911. 
Srr: I have the honor to transmit herewith a manuscript on the 
subject of Relation of Calcareous Soils to Pineapple Chlorosis. Owing 
to the great increase in importance of this fruit in Porto Rico any 
investigation leading to its improvement is timely. The number of 
failures occurring in certain soils which apparently are well adapted 
to pineapple growing lends value to the results as set forth in this 
manuscript, which offers an explanation of the cause of the failures 
and suggests means of avoiding great losses in the future. 
I respectfully recommend that this manuscript be issued as Bulletin 
No. 11 of this station and that it be published in both English and 
Spanish. 
Respectfully, D. W. May, 
Special Agent in Charge. 
Dr A: C. True; 
Director Office of Experiment Stations, 
U. S. Department of Agriculture, Washington, D. C. 
Recommended for publication. 
A. C. Tru, Director. 
Publication authorized. 
JAMES WILSON, 
Secretary of Agriculture 
[Bull. 11] (3) 
