84 -* 
: ,Yol. XXI 
JUNE 1* 1921 
No. 5 
.V ,'' 
I 
m 
CONTENTS 
Effect of Ration on the Development of Rigs - - 
• , c. O. SWANSON 
(Contribution from Kansas Agricultural Experini: nt Station) 
Some Fundamentals of Stable Ventilation - 
HENRYPRENTISS ARMSBYand MAX KRISS 
? ^ _ (Contribution from Pennsylvania Agricultural Experiment Station) 
Page 
279 
343 
Treatment of Celery Seed for the Control of Septoria 
Blight - - - - - _ _ _ _ - 369 
WEBSTER S. KROUT 
(Contribution from Massachusetts Agricultural Experiment Station) 
PUBLISHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE* 
WITH THE COOPERATION OF THE ASSOCIATION OF 
LAND-GRANT COLLEGES 
WASHINGTON, ID. C. 
WASNINGTON: GOVERNMENT PB1NTINQ OFPICE 1 821 
