UNITED STATES DEPARTMENT OF AGRICULTURE 

 BULLETIN No. 601 



Joint Contribution from the Bureau of Plant Industry, WM. A. TAYLOR, Chief, 

 and the Bureau of Markets, CHARLES J. BRAND, Chief 



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 



Preventing Decay in Lettuce and Celery 



Lettuce-Handling Investigations . . 



Nature of the Problem .... 



Outline of Experiments in 1913-14 



Results of Experiments in 1913-14 



Outline of Experiments in 1914-15 



Results of Experiments in 1914-15 



Celery-Handling Investigations . . . 



Nature of the Problem .... 



Outline of Celery- Precooling Experi 



i ments 



Page 



1 



2 



2 



3 



6 



13 



14 



18 



13 



19 



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 



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