fOL. XXV SEPTEMBER 8 , 1928 No. 10 
CONTENTS 
■■ Tag* 
Origin and Control of Apple-Blotch Cankers - - - - 403 
MAX W. GARDNER 
(Contribution from Indiana Agricultural Experlmont Station) ; 
Determination of the Surface Area of Cattle and Swine - - 419 
ALBERT G. HOGAN and CHARLES I. SKOUBY 
(Contribution from Missouri Agricultural Experiment Station) 
PUBLISHED BY 'AUTHORITY OF THE SECRETARY OF AGRICULTURE 
WITH THE COOPERATION OF THE ASSOCIATION 
OF LAND-GRANT COLLEGES 
WASHINGTON, D. C. 
GOVERNMENT PRINTING OFFICE 
