UNITED STATES DEPARTMENT OF AGRICULTURE 
BULLETIN No. 601 
Joint Contribution front TtheBw^au-olPlantlndustry, WM. A. TAYLOR, Chief, 
and the Bureau of Markets, CHARLES~JrBRANDi^hief .. . 
Washington, D. C. 
December 21, 1917 
THE HANDLING AND PRECOOLING 
OF FLORIDA LETTUCE 
AND CELERY 
By 
H. J. RAMSEY, Pomologist in Charge of Fruit and Vegetable Handling 
and Storage Investigations, and E. L. MARKELL, Scientific Assistant, 
Office of Horticultural and Pomological Investigations 
CONTENTS 
Page 
Preventing Decay in Lettuce and Celery 1 
Lettuce-Handling Investigations ... 2 
Nature of the Problem ..... 2 
Outline of Experiments in 1913-14 . 3 
Results of Experiments in 1913-14 . 6 
Outline of Experiments in 1914-15 . 13 
Results of Experiments in 1914-15 . 14 
Celery-Handling Investigations .... 18 
Nature of the Problem 18 
Outline of Celery- Precooling Experi- 
ments 19 
Page 
Celery-Handling Investigations— Cont'd. 
Transit Temperature Records ... 20 
Cost of Precooling and Initial Icing 
Compared with Regular Icing . . 23 
Outline of Celery-Storage Experi- 
ments 23 
Storage Troubles 23 
Results of Storage Experiments . . 24 
Summary 27 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1917 
