196 BOTANICAL GAZETTE [OCTOBER 
Fic. 4.—Tangential section of diseased wood, showing broadened medul- 
lary rays and enlarged and distorted fibers. 
Fic. 5.—Twigs bearing characteristic galls; reduced 4. 
1G. 6.—Normal twig, showing method of branching; reduced 4. 
Fic. 7.—Cluster of branches, showing characteristic habit of galls; many 
of these twigs were dead at tips; much reduced. 
Fic. 8.—Transverse section of gall on five-year old twig; to right of this 
is shown transverse section of twig just below gall; reduced 3. 
Fic. 9.—Characteristic irregularity of cambium ring in diseased twig. 
Fic. 10.—Normal one-year old twig and twig of same age bearing gall; 
reduced 4. 
