UNITED STATES DEPARTMENT OF AGRICULTURE 
BULLETIN No. 1022 
Contribution from the Bureau of Plant Indastry 
WM. A. TAYLOR, Chief 
Washington, D. C. February 3, 1922 
RELATION OF INITIAL TEMPERATURE TO 
PRESSURE, VACUUM, AND TEMPERATURE 
CHANGES IN THE CONTAINER DURING 
CANNING OPERATIONS 
; By 
C. A. MAGOON and C. W. CULPEPPER 
Office of Horticultural and Pomological Investigations 
deNenonds 
Canning Problems 
Review of the Literature. 
Need for Study of Initial Teniperatiine in ‘Tts ‘epethtion s Br peune ‘and 
Vacuum aN rar eat Vey Bile 4 és 
Methods and Mapdiatie i 
Theoretical Pressures and Mearns 7 
Experiments with Distilled Water for Conitisibor 
Experiments with rea ig Food Materials . 
Summary. . DLW Ni cot PERT IS 
Literature Cited . 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1922 
