Vol. XXIII 
JANUARY 27, 1923 
No. 4 
JOURNAL OF 
CONTENTS 
?<«e 
Two Important New Types of Citrous Hybrids for the 
Home Garden—Citrangequats and Limequats - 229 
WALTER T. SWINGLE arid T. RALPH ROBINSON . 
\Contnbu8on from Bureau, of Plant Industry) " ' ' • 
Production and Dispersal of Conidia in the Philippine Scle- • 
rosporas of Maize - " -- - - .239- 
WHEIAM H. WESTON, Jr., V ' ' 
- ’ (Contribution from Bureau of Plant Industry) \ 1 ,. _ 
Mechanics of Inoculation with Sugar-Cane Mosaic by 
Insect Vectors _ - - ’ - - 279 
E.W.BRANDES 
(Contribution bom Bureau of Plant Industry) 
Relation of Potato Skinspot to. Powdery Scab 
- : MICHAEL SHAPOVALOV 
* _ ' \ ^ (Contribution from Bureau of .Plant Industry) 
285 
PUBLISHED BV4OTHOiimr of tHe secretary of apiculture 
WITH THE COOPERATION OF THE ASSOCIATION 
OF LAND-GRANT COLLEGES . 
' __ WASHINGTON, B. C. ■ 
GOVERNMENT PRINTING OFFICE 
