HAWAII AGRICULTURAL EXPERIMENT STATION, HONOLULU. 
[Under the supervision of A. C. True, Director of the States Relations Service, United 
States Department of Agriculture.] 
E. W. Allen, Chief of Office of Experiment Stations. 
Waltee H. Evans, Chief of Division of Insular Stations, Office of Experiment 
Stations. 
STATION STAFF. 
J. M. Westgate, Agronomist in Charge. 
J. Edgar Higgins, Horticulturist. 
M. O. Johnson, 1 Chemist. 
F. G. Kratjss, Superintendent of Extension Work. 
J. B. Thompson, Assistant Agronomist, in Charge of Glenwood Substation. 
Alice R. Thompson, Assistant Chemist. 
V. S. Holt, Assistant Horticulturist. 
C. A. Sahr, Assistant Agronomist. 
A. T. Longley, In Charge of Cooperative Marketing Investigations. 
LETTER OF TRANSMITTAL 
Hawaii Agricultural Experiment Station. 
Honolulu, Hawaii, December 14, 1915. 
Sir : I have the honor to submit herewith, and recommend for publication as 
Bulletin No. 42 of the Hawaii Agricultural Experiment Station, a manuscript 
entitled "The Composition of Hawaiian Soil Particles," by Wm. T. McGeorge, 
formerly chemist of this station. The variations in Hawaiian soils as compared 
with the soils of the mainland of the United States are so great and unusual 
as to make it of economic importance to determine as many as possible of the 
fundamental causes of the variations. As pointed out in the accompanying 
manuscript, the size of the particles of different Hawaiian soils bears a distinct 
relation to their composition. 
Respectfully, J. M. Westgate, 
Agronomist in Charge. 
Dr. A. C. True, 
Director States Relations Service, 
U. S. Department of Agriculture, Washington, D. C. 
Publication recommended. 
A. C. True, Director. 
Publication authorized. 
D. F. Houston, Secretary of Agriculture. 
1 Appointed July 25, 1915, to succeed Wm. T. McGeorge, transferred to U. S. Depart- 
ment of Agriculture, Bureau of Chemistry. 
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