UNITED STATES DEPARTMENT OF AGRICULTURE 
BULLETIN No. 7 64 
Contribution from Bureau of Markets 
CHARLES J. BRAND, Chief 
Washington, D. C. 
PROFESSIONAL PAPER. 
July 5, 1919 
FACTORS INFLUENCING THE CARRYING QUALITIES 
OF AMERICAN EXPORT CORN. 
By E. G. Boerner, 
Grain Supervisor. 
CONTENTS. 
Page. Page. 
LIEV HaaS 11 C0) 8 ERS Re re eres ne ae toe 1 | Cargo No, 2—Continued. 
Moisture content as a factor influencing the Change in temperature and condition of the 
carrying qualities of export corn........- 3 natural corn in hold No. 1..........-....- 29 
Germination and fermentation in export Change in temperature and condition of the 
COLT ee ee eae of PER Ca 5 natural com in hold No. 2225.--22------ = 30 
The keeping qualities of export corn influ- Change in temperature and condition of the 
enced by its position of stowage in the dried corn in hold No. 3....-....--.----- 32 
aioaWIShipeecome eee ees ee 6 Influence of boiler heat on the corn.....-..- 33 
Length of the voyage and season of the year Change in temperature and condition of the 
when shipped, in relation to the carrying natural corn in hold No. 4...-...-------- 36 
qualities of com’. -22 isle G3 Influence of engine heat on the corn.....--- 38 
GarporNouly tia eet alas eae pia Lie oak 7 Change in temperature and condition of the 
Description of the corn..........-..------- 7 natural corn in hold No. 5..............- 39 
Stowage of the corn.........-.-----------+- 7 Influence of tunnel heat....:-..........-- 40 
Condition of the corn as loaded.........-.-- 8 “Sweat”’ and fermentation in the holds . 43 
Temperature changes during the voyage... 11 Correlation ofthe changes in the temperature 
Influence of water temperature..........-- 11 of the corn and the changes in sound ker- 
Temperature changes in top and bottom of nels, acidity, germination, and test weight 
BiG See ee een hae tea Be 13 ISTO US WO les ryapaicyeye teers ee erie a es eevee 44 
Influence of boiler heat.........-....------ 14 | Cargo No. 3....- 22-20. - ++ 22-2 eee e reeset eee 45 
Condition of the corn as discharged.......- 17 Stowage of the corn.........-+----+-+-++--- 45 
“Sweat”? and sprouted cornin the holds... 20 Condition of the corn as loaded............ 45 
Moisture test alone not sufficient to deter- Temperature changes during the voyage 
mine carrying quality of corn............ 21 and condition of the corn as discharged.. 47 
Correlation of the changes in temperature Cargo No. 4.........-2---20eeeee-e eee e eee eee 49 
and the changes in acidity, germination, [Cargoes Nos. 4 to 9 are discussed under the 
moisture content, and test weight per same headings as cargo No. 3.] 
Prristicl eee e Aes Kw nye aero! au 93 | Catgo No. 5.-.... 2... 222-0022. 2 02 eee te 54 
The handling of the corn as discharged.... 24 | CaT80 No. 6.....-.--+- +++ +++ +++ eee eee e ee ee eee 69 
Cargo SIN De ee ie ete ots EUR RN By ie 26 Cargo INOS Wecnboseouesses eceoosdgcadesodouen 68 
SLOWALCIOL LNOICORN nae ss see aa ieee ats 26 ee ay ; einen cme at ire Tee de ere 5! 
Condition of the corn as loaded...........- 27 Seni pi hiaelnk ih Watanabe Cres agi24 Si2 96 
Meniperature  chanceswauring Ane: Voyare,.= fe iat aig’ cm ie bey th Gah iis t cos 
and condition of the corn as discharged. . 27 
INTRODUCTION. 
Large quantities of American corn are normally exported to Europe 
each year. 
Investigations conducted by the United States Depart- 
~ment of Agriculture have shown that a considerable amount of the 
95190°—19—Bull, 764——1 
